Persisting symptoms after Cryptosporidium hominis outbreak: a 10-year follow-up from Östersund, Sweden.

In late 2010, an outbreak of Cryptosporidium hominis affected 27,000 inhabitants (45%) of Östersund, Sweden. Previous research shows that abdomen and joint symptoms commonly persist up to 5 years post-infection. It is unknown whether Cryptosporidium is associated with sequelae for a longer duration, how persisting symptoms present over time, and whether sequelae are associated with prolonged infection. In this prospective cohort study, a randomly selected cohort in Östersund was surveyed about cryptosporidiosis symptoms in 2011 (response rate 69.2%). A case was defined as a respondent reporting new diarrhoea episodes during the outbreak. Follow-up questionnaires were sent after 5 and 10 years. Logistic regressions were used to examine associations between case status and symptoms reported after 10 years, with results presented as adjusted odds ratios (aOR) with 95% confidence intervals. Consistency of symptoms and associations with case status and number of days with symptoms during outbreak were analysed using X2 and Mann-Whitney U tests. The response rate after 10 years was 74% (n = 538). Case status was associated with reporting symptoms, with aOR of ~3 for abdominal symptoms and ~2 for joint symptoms. Cases were more likely to report consistent symptoms. Cases with consistent abdominal symptoms at follow-up reported 9.2 days with symptoms during the outbreak (SD 8.1), compared to 6.6 days (SD 6.1) for cases reporting varying or no symptoms (p = 0.003). We conclude that cryptosporidiosis was associated with an up to threefold risk for reporting symptoms 10 years post-infection. Consistent symptoms were associated with prolonged infection.

Adopting standardized cancer patient pathways as a policy at different organizational levels in the Swedish Health System.

BACKGROUND: Standardized cancer patient pathways as a new policy has been adopted in healthcare to improve the quality of cancer care. Within the health systems, actors at different levels manage the adoption of new policies to develop healthcare. The various actors on different levels play an important role and influence the policy adoption process. Thus, knowledge about how these actors use strategies when adopting cancer patient pathways as a policy in the health system becomes central. METHOD: The study's aim was to explore how actors at different organizational levels in the health system adopted cancer patient pathways. Our overarching case was the Swedish health system at the national, regional, and local levels. Constructivist Grounded Theory Method was used to collect and analyze qualitative interviews with persons working in organizations directly involved in adopting cancer patient pathways at each level. Twelve individual and nine group interviews were conducted including 53 participants. RESULTS: Organizational actors at three different levels used distinct strategies during the adoption of cancer patient pathways: acting as-missionaries, fixers, and doers. Acting as missionaries consisted of preaching the idea of cancer patient pathways and framing it with a common purpose to agree upon. Acting as fixers entailed creating a space to put cancer patient pathways into practice and overcome challenges to this. Acting as doers comprised balancing breadth and speed in healthcare provision with not being involved in the development of cancer patient pathways for the local context. These strategies were not developed in isolation from the other organizational levels but rather, each level interacted with one another. CONCLUSIONS: When adopting new policies, it is important to be aware of the different strategies and actors at various organizational levels in health systems. Even when actors on different levels developed separate strategies, if these contribute to fulfilling the four domains of inter-organizational collaboration, they can work well together to adopt new policies. Our study highlighted that the application of two domains was lacking, which meant that local actors were not sufficiently involved in collaboration, thus constricting the local use and optimization of cancer patient pathways in practice.

Increased incidence of late-onset inflammatory bowel disease and microscopic colitis after a Cryptosporidium hominis outbreak.

OBJECTIVES: In 2010, 27,000 inhabitants (45% of the population) of Östersund, Sweden, contracted clinical cryptosporidiosis after drinking water contaminated with Cryptosporidium hominis. After the outbreak, local physicians perceived that the incidence of inflammatory bowel disease (IBD), including ulcerative colitis (UC), Crohn's disease (CD), and IBD-unclassified, and microscopic colitis (MC) increased. This study assessed whether this perception was correct. MATERIALS AND METHODS: This observational study included adult patients (≥18 years old) from the local health care region who were diagnosed with pathology-confirmed IBD or MC during 2006-2019. We collected and validated the diagnosis, date of diagnosis, age at diagnosis, and sex from the Swedish quality register SWIBREG and electronic patient records. Population data were collected from Statistics Sweden. The incidences for 2006-2010 (pre-outbreak) and 2011-2019 (post-outbreak) were evaluated by negative binomial regression analysis and presented as incidence rate ratios (IRRs). Data were analyzed for IBD, for UC and CD separately, and MC. RESULTS: During the study period, we identified 410 patients with new onset IBD and 155 new cases of MC. Overall, we found a trend toward an increased incidence of IBD post-outbreak (IRR 1.39, confidence interval (CI) 0.99-1.94). In individuals ≥40 years old, the post-outbreak incidence significantly increased for IBD (IRR 1.69, CI 1.13-2.51) and CD (IRR 2.23, CI 1.08-4.62). Post-outbreak incidence of MC increased 6-fold in all age groups (IRR 6.43, CI 2.78-14.87). CONCLUSIONS: The incidence of late-onset IBD and MC increased after the Cryptosporidium outbreak. Cryptosporidiosis may be an environmental risk factor for IBD and MC.

The association between sociodemographic factors and time to diagnosis for colorectal cancer in northern Sweden.

OBJECTIVES: This study examined whether sociodemographic factors, including distance to hospital, were associated with differences in the diagnostic interval and the treatment interval for colorectal cancer in northern Sweden. METHODS: Data were retrieved from the Swedish cancer register on patients (n = 446) diagnosed in three northern regions during 2017-2018, then linked to data from Statistics Sweden and medical records. Also, Google maps was used to map the distance between patients' place of residence and nearest hospital. The different time intervals were analysed using Mann-Whitney U-test and Cox regression. RESULTS: Differences in time to diagnosis were found between groups for income and distance to hospital, favouring those with higher income and shorter distance. The unadjusted regression analysis showed higher income to be associated with more rapid diagnosis (HR 1.004, CI 1.001-1.007). This association remained in the fully adjusted model for income (HR 1.004, CI 1.000-1.008), but not for distance. No differences between sociodemographic groups were found in the treatment interval. CONCLUSION: Higher income and shorter distance to hospital were in the unadjusted models associated with shorter time to diagnosis for patients with CRC in northern Sweden. The association remained for income when adjusting for other variables even though the difference was small.

Merging existing practices with new ones: the adjustment of organizational routines to using cancer patient pathways in primary healthcare.

BACKGROUND: The introduction of new tools can bring unintended consequences for organizational routines. Cancer Patient Pathways (CPP) were introduced into the Swedish healthcare system in 2015 to shorten time to diagnosis and treatment. Primary healthcare (PHC) plays a central role since cancer diagnosis often begins in PHC units. Our study aimed to understand how PHC units adjusted organizational routines to utilizing CPPs. METHOD: Six PHC units of varied size from both urban and rural areas in northern Sweden were included. Grounded theory method was used to collect and analyse group interviews at each unit. Nine group interviews with nurses and physicians, for a total of 41 participants, were performed between March and November 2019. The interviews focused on CPPs as tools, the PHC units' routines and providers' experiences with using CPPs in their daily work. RESULTS: Our analysis captured how PHC units adjusted organizational routines to utilizing CPPs by fusing existing practices with new practices to offer better quality of care. Specifically, three overarching organizational routines within the PHC units were identified. First, Manoeuvring diverse patient needs with easier patient flow, the PHC units handled the diverse needs of the population while simultaneously drawing upon CPPs to ease the patient flow within the healthcare system. Second, (Dis) integrating internal know-how, the PHC units drew upon internal competence even when PHC know-how was not taken into account by those driving the CPP initiative. Third, Coping with unequal relationships toward secondary care, the PHC units dealt with being in an unequal position while adopting CPPs instead further decreased possibilities to influence decision-making between care-levels. CONCLUSION: Adopting CPPs as a tool within PHC units brought various unintended consequences in organizational routines. Our study from northern Sweden illustrates that the PHC know-how needs to be integrated into the healthcare system to improve the use of new tools as CPP. Further, the relationships between different levels of care should be taken in account when introducing new tools for healthcare. Also, when adopting innovations, unintended consequences need to be further explored empirically in diverse healthcare contexts internationally in order to generate deeper knowledge in the research area.

Use of faecal immunochemical tests common in patients with suspected colorectal cancer but unrelated to travel distance to secondary care: a population-based study from Swedish primary care.

BACKGROUND: Evidence is increasing for the use of faecal immunochemical tests (FITs) for occult blood as diagnostic tools when colorectal cancer can be suspected. FITs have been used for this purpose in Swedish primary care since around 2005 despite absence of supporting guidelines. To our knowledge, the extent of this use has not been studied. OBJECTIVE: To investigate the use of FITs as diagnostic tools, and if the use was related to patient age, sex and travel time from primary care to diagnostic facilities in secondary care. DESIGN: Population-based retrospective study using data from electronic health records. SETTING AND SUBJECTS: Patients ≥18 years that provided FITs in primary care in five Swedish health care regions during 2015. Driving times from their primary care centres to secondary care were calculated. MAIN OUTCOME MEASURES: The proportion of patients that provided FITs was calculated for each region, different age intervals and grouped driving times. RESULTS: 18,913 patients provided FITs. The proportion of listed patients in the five regions that provided FITs increased with age: 0.86-1.2% for ages <65 years, 3.6-4.1% for ages 65-79 years and 3.8-6.1% for ages ≥80 years. Differences between the regions were small. There was no overall correlation between the proportion of patients that provided FITs and driving time to secondary care. CONCLUSION: FITs were used extensively in Swedish primary care with a higher use in older age groups. There was no tendency towards a higher use of FITs at primary care centres with longer driving times to secondary care.Key PointsEvidence is increasing for the use of faecal immunochemical tests (FITs) as diagnostic tools when colorectal cancer can be suspected. We investigated the use of FITs in Sweden.FITs were used extensively in primary care especially in older age groups.There were small differences in the use of FITs between five studied health care regions.There was no tendency towards a higher use of FITs at primary care centres with longer driving times to diagnostic facilities in secondary care.

Comparing continuous subcutaneous insulin infusion and multiple daily injections in children with Type 1 diabetes in Sweden from 2011 to 2016-A longitudinal study from the Swedish National Quality Register (SWEDIABKIDS).

OBJECTIVE: This study aimed to compare metabolic control measured as hemoglobin A1c (HbA1c), the risk of severe hypoglycemia, and body composition measured as body mass index standard deviation scores (BMI-SDS) in a nationwide sample of children and adolescents with Type 1 diabetes with continuous subcutaneous insulin infusion (CSII) and multiple daily injections (MDI), respectively. RESEARCH DESIGN AND METHODS: Longitudinal data from 2011 to 2016 were extracted from the Swedish National Quality Register (SWEDIABKIDS) with both cross-sectional (6 years) and longitudinal (4 years) comparisons. Main end points were changes in HbA1c, BMI-SDS, and incidence of severe hypoglycemia. RESULTS: Data were available from 35,624 patient-years (54% boys). In general, HbA1c decreased approximately 0.5% (2-5 mmol/mol) from 2011 to 2016 (ptrend < 0.001) and the use of CSII increased in both sexes and all age groups. Mean HbA1c was 0.1% (0.7-1.5 mmol/mol) lower in the CSII treated group. Teenagers, especially girls, using CSII tended to have higher BMI-SDS. There was no difference in the number of hypoglycemias between CSII and MDI over the years 2011-2016. CONCLUSIONS: There was a small decrease in HbA1c with CSII treatment but of little clinical relevance. Overall, mean HbA1c decreased in both sexes and all age groups without increasing the episodes of severe hypoglycemia, indicating that other factors than insulin method contributed to a better metabolic control.

Qualitative faecal immunochemical tests (FITs) for diagnosing colorectal cancer in patients with histories of rectal bleeding in primary care: a cohort study.

BACKGROUND: Rectal bleeding is considered an alarm symptom for colorectal cancer (CRC) but it is common and mostly caused by benign conditions. Qualitative faecal immunochemical tests (FITs) for occult blood have been used as diagnostic aids for many years in Sweden when CRC is suspected. The study aimed to evaluate the usefulness of FITs requested by primary care physicians for patients with and without histories of rectal bleeding, in the diagnosis of CRC. METHODS: Results of all FITs requested in primary care for symptomatic patients in the Örebro region during 2015 were retrieved. Data on each patient's history of rectal bleeding was gathered from electronic health records. Patients diagnosed with CRC within 2 years were identified from the Swedish Cancer Register. The analysis focused on three-sample FITs, the customary FIT in Sweden. RESULTS: A total of 4232 patients provided three-sample FITs. Information about the presence/absence of rectal bleeding was available for 2027 patients, of which 59 were diagnosed with CRC. For 606 patients with the presence of rectal bleeding, the FIT showed sensitivity 96.2%, specificity 60.2%, positive predictive value 9.8% (95% CI 6.1-13.4) and negative predictive value 99.7% (95% CI 99.2-100) for CRC. For 1421 patients without rectal bleeding, the corresponding figures were 100%, 73.6%, 8.3% (95% CI 5.6-10.9) and 100% (95% CI 99.6-100). CONCLUSION: The diagnostic performance of a qualitative three-sample FIT provided by symptomatic patients in primary care was similar for those with and without a history of rectal bleeding. FITs seem useful for prioritising patients also with rectal bleeding for further investigation.

Negotiating bodily sensations between patients and GPs in the context of standardized cancer patient pathways - an observational study in primary care.

BACKGROUND: How interactions during patient-provider encounters in Swedish primary care construct access to further care is rarely explored. This is especially relevant nowadays since Standardized Cancer Patient Pathways have been implemented as an organizational tool for standardizing the diagnostic process and increase equity in access. Most patients with symptoms indicating serious illness as cancer initially start their diagnostic trajectory in primary care. Furthermore, cancer symptoms are diverse and puts high demands on general practitioners (GPs). Hence, we aim to explore how presentation of bodily sensations were constructed and legitimized in primary care encounters within the context of Standardized Cancer Patient Pathways (CPPs). METHODS: Participant observations of patient-provider encounters (n = 18, on 18 unique patients and 13 GPs) were carried out at primary healthcare centres in one county in northern Sweden. Participants were consecutively sampled and inclusion criteria were i) patients (≥18 years) seeking care for sensations/symptoms that could indicate cancer, or had worries about cancer, Swedish speaking and with no cognitive disabilities, and ii) GPs who met with these patients during the encounter. A constructivist approach of grounded theory method guided the data collection and was used as a method for analysis, and the COREQ-checklist for qualitative studies (Equator guidelines) were employed. RESULTS: One conceptual model emerged from the analysis, consisting of one core category Negotiating bodily sensations to legitimize access, and four categories i) Justifying care-seeking, ii) Transmitting credibility, iii) Seeking and giving recognition, and iv) Balancing expectations with needs. We interpret the four categories as social processes that the patient and GP constructed interactively using different strategies to negotiate. Combined, these four processes illuminate how access was legitimized by negotiating bodily sensations. CONCLUSIONS: Patients and GPs seem to be mutually dependent on each other and both patients' expertise and GPs' medical expertise need to be reconciled during the encounter. The four social processes reported in this study acknowledge the challenging task which both patients and primary healthcare face. Namely, negotiating sensations signaling possible cancer and further identifying and matching them with the best pathway for investigations corresponding as well to patients' needs as to standardized routines as CPPs.

Patient-reported and doctor-reported symptoms when faecal immunochemical tests are requested in primary care in the diagnosis of colorectal cancer and inflammatory bowel disease: a prospective study.

BACKGROUND: Rectal bleeding and a change in bowel habits are considered to be alarm symptoms for colorectal cancer and they are also common symptoms for inflammatory bowel disease. However, most patients with these symptoms do not have any of these diseases. Faecal immunochemical tests (FITs) for haemoglobin are used as triage tests in Sweden and other countries but little is known about the symptoms patients have when FITs are requested. OBJECTIVE: Firstly, to determine patients' symptoms when FITs are used as triage tests in primary care and whether doctors record the symptoms that patients report, and secondly to evaluate the association between symptoms, FIT results and possible prediction of colorectal cancer or inflammatory bowel disease. METHODS AND MATERIALS: This prospective study included 364 consecutive patients for whom primary care doctors requested a FIT. Questionnaires including gastrointestinal symptoms were completed by patients and doctors. RESULTS: Concordance between symptoms reported from patients and doctors was low. Rectal bleeding was recorded by 43.5% of patients versus 25.6% of doctors, FITs were negative in 58.3 and 52.7% of these cases respectively. The positive predictive value (PPV) of rectal bleeding recorded by patients for colorectal cancer or inflammatory bowel disease was 9.9% (95% confidence interval [CI] 5.2-14.7); for rectal bleeding combined with a FIT the PPV was 22.6% (95% CI 12.2-33.0) and the negative predictive value (NPV) was 98.9% (95% CI 96.7-100). For patient-recorded change in bowel habits the PPV was 6.1% (95% CI 2.4-9.8); for change in bowel habits combined with a FIT the PPV was 18.2% (95% CI 9.1-30.9) and the NPV 100% (95% CI 90.3-100). CONCLUSIONS: Doctors should be aware that, during consultations, they do not record all symptoms experienced by patients. FITs requested in primary care, when found positive, may potentially be of help in prioritising referrals, also when patients present with rectal bleeding or change in bowel habits.

GPs' perspectives of the patient encounter - in the context of standardized cancer patient pathways.

Objective: We aim to explore how GPs assign meanings and act upon patients' symptoms in primary care encounters in the context of standardized cancer patient pathways (CPPs).Design, setting and subjects: Thirteen individual interviews were conducted with GPs, at primary healthcare centers (n = 4) in one county in northern Sweden. Interviews were analyzed using grounded theory method. The results were then linked to symbolic interactionism.Main outcome measures: GPs' perspectives about assigning meanings to patients' presented symptoms and perception about CPPs.Results: In the encounter, GPs engaged in two simultaneous interactions, one with patients' symptoms - and the other with CPPs. The core category Disentangling patients' care trajectory consists of three categories, interpreted as GPs' strategies developed to assign meaning to symptoms. These strategies are carried out not in a straightforward manner but rather in a conflicting way, illuminating the complexity of GPs' daily work.Conclusions: Interacting with patients is vital for assigning meaning to presented symptoms. However, nowadays GPs are not only required to interact with patients, they are also required to interact with CPPs. These standardized routines might create pressure and demands on GPs, especially for those experiencing a lack of information about CPPs. Beside of carrying out the challenging patient/person-centered dialogues and interpreting presented symptoms, GPs also need to link the interpreted symptoms to CPPs. Therefore, it is essential that GPs are given opportunities at their workplaces to continuously be informed and be supported in order to practice CPPs and thereby optimize trajectories for patients undergoing cancer diagnostics.Key points Current awareness: • GPs deliberation about patients' trajectories is a complex process, often dealing with vague symptoms. How CPPs influence this process within the encounter has not been studied. Main statements: • GPs in our study were involved in two simultaneous interactions, one with patients' symptoms in the encounter - and the other with CPPs within the healthcare organization. • Symbolic interactionism helped capture how GPs deliberated about conflicting and paradoxical aspects of the encounter, in terms of balancing two contradictory ways of action that GPs face when providing patient/person-centered care and linking to CPPs. • Based on our results, primary care needs support from healthcare organizations to build capacity about CPPs and how to use them.

Wishing to be perceived as a capable and resourceful person-A qualitative study of melanoma patients' experiences of the contact and interaction with healthcare professionals.

AIMS AND OBJECTIVES: To explore patients' experiences of contact and interaction with healthcare professionals (HCPs) during the diagnostic process of melanoma. BACKGROUND: In Sweden, most patients with suspected skin lesions seek care at the primary level of services in the first instance. Previous research describes the diagnostic process as a complex journey with uncertainty. Nonetheless, the importance of contact and interaction between patient and HCPs during the diagnostic process is rarely explored. DESIGN: This study adopted a qualitative design in which semi-structured interviews were conducted and the COREQ-checklist for qualitative studies employed (EQUATOR guidelines). METHODS: A sample of 30 patients (15 women, 15 men) diagnosed with melanoma was included. Secondary analysis of interviews was carried out using qualitative content analysis. RESULTS: One theme emerged: Wishing to be perceived as a capable and resourceful person that consisted of three categories: (a) The need of being valued, (b) The need of being informed and (c) The need of taking actions. CONCLUSIONS: Our results suggest that patients wish to be valued as capable and resourceful persons as well as to be provided with honest and sufficient information about the diagnosis and subsequent procedures. By fulfilling these wishes, HCPs can involve patients in the diagnostic process and reduce patients' uncertainty. A need of supportive and accessible health care to manage the diagnostic process and to reduce patients' struggle for care was also identified. RELEVANCE TO THE CLINICAL PRACTICE: Patients are satisfied when health care is organised in a patient-/person-centred manner, that is, in accordance with patients' needs, avoiding gatekeeping, and when HCPs interact respectfully in encounters. Accessible HCPs during the diagnostic process of melanoma are required to inform, support and navigate patients within the healthcare system and through their diagnostic journey.

Association between sociodemographic determinants and health outcomes in individuals with type 2 diabetes in Sweden.

BACKGROUND: Concurrent multifactorial treatment is needed to reduce consequent risks of diabetes, yet most studies investigating the relationship between sociodemographic factors and health outcomes have focused on only one risk factor at a time. Swedish health care is mainly tax-funded, thus providing an environment that should facilitate equal health outcomes in patients, independent of background, socioeconomic status, or health profile. This study aimed at investigating the association between several sociodemographic factors and diabetes-related health outcomes represented by HbA1c , systolic blood pressure, low-density lipoprotein cholesterol, predicted 5-year risk of cardiovascular disease, and statin use. METHODS: This large retrospective registry study was based on patient-level data from individuals diagnosed with type 2 diabetes during 2010 to 2011 (n = 416,228) in any of 7 Swedish regions (~65% of the Swedish population). Health equity in diabetes care analysed through multivariate regression analyses on intermediary outcomes (HbA1c , systolic blood pressure, and low-density lipoprotein), predicted 5-year risk of cardiovascular disease and process (i.e., statin use) after 1-year follow-up, adjusting for several sociodemographic factors. RESULTS: We observed differences in intermediary risk measures, predicted 5-year risk of cardiovascular disease, and process dependent on place of birth, sex, age, education, and social setting, despite Sweden's articulated vision of equal health care. CONCLUSIONS: Diabetes patients' health was associated with sociodemographic prerequisites. Furthermore, in addition to demographics (age and sex) and disease history, educational level, marital status, and region of birth are important factors to consider when benchmarking health outcomes, e.g., average HbA1c level, and evaluating the level of health equity between organizational units or between different administrative regions.

Sick leave due to diarrhea caused by contamination of drinking water supply with Cryptosporidium hominis in Sweden: a retrospective study.

We investigated sick leave from work, studies, preschool, and kindergarten occurring between 1 November 2010 and 31 January 2011 and associated with a waterborne outbreak of diarrhea caused by Cryptosporidium hominis in late November 2010 in Östersund, Sweden with 45.2% of 60,000 residents being symptomatic. A questionnaire defining acute watery diarrhoea and/or ≥3 diarrhea episodes/day as cryptosporidiosis was sent to 1,508 residents in late January 2011 (response rate 69.2%). Among adults aged 18-60 years, 24.0% took sick leave for a mean of 4.6 (SD ± 4.0) days due to cryptosporidiosis, and an additional 10.6% were absent from work a mean of 4.0 (±2.2) days to care for symptomatic children. Among children (aged ≤17 years), 35.0% stayed home sick from kindergarten/preschool or school/university for a mean of 5.2 (±3.8) days resulting in 5.1 (±4.4) days of absence from work per sick child shared between parents/guardians. The estimated total number of sick leave days was 50,000 for adults and 20,700 for children, with an estimated direct cost of €7 million for employers. The potential impact on society of sick leave caused by waterborne diseases must be considered in decisions regarding the quality of drinking water.

Diagnosing colorectal cancer and inflammatory bowel disease in primary care: The usefulness of tests for faecal haemoglobin, faecal calprotectin, anaemia and iron deficiency. A prospective study.

OBJECTIVE: Abdominal complaints are common reasons to consult primary care but they are seldom caused by colorectal cancer (CRC), high-risk adenomas (HRAs), or inflammatory bowel disease (IBD). Reliable diagnostic aids would be helpful in deciding which patients to refer for bowel imaging. Our aim was to assess the value of a faecal immunochemical test (FIT) and a faecal calprotectin (FC) test in detecting CRC, HRAs and IBD in primary care, and the value of combining these tests with anaemia and iron-deficiency tests. MATERIALS AND METHODS: This prospective study included 373 consecutive patients that received a FIT or a FC test ordered by a primary care physician. We collected samples for FITs, FC tests, full blood counts and iron-deficiency tests. Physicians were instructed to refer patients with a positive FIT or FC test (cut-off ≥100µg/g) for bowel imaging. The patients' presenting symptoms were recorded. Patients were followed for 2 years. RESULTS: The best test for detecting CRC and IBD was the combination of the FIT and haemoglobin concentration. This test had a sensitivity, specificity, positive predictive value and negative predictive value of 100%, 61.7%, 11.7% and 100%, respectively. The FIT detected a significantly larger proportion of CRC, HRAs and IBD than the FC test (0.92 versus 0.46, 95% confidence interval 0.22-0.67). CONCLUSION: A negative FIT combined with a normal haemoglobin concentration could rule out CRC and IBD with a high degree of safety. This could be useful in prioritising referrals for bowel imaging from primary care.

Faecal immunochemical tests for the diagnosis of symptomatic colorectal cancer in primary care: the benefit of more than one sample.

OBJECTIVE: Faecal immunochemical tests (FITs) are used to screen for colorectal cancer (CRC) and as diagnostic aids in symptomatic patients. However, the number of samples per FIT varies. It is unclear if there is any advantage to analyse multiple-sample FITs in symptomatic patients. DESIGN AND SETTING: This is a post hoc analysis of a retrospective study that included all cases of CRC and adenomas with high-grade dysplasia (HGD) between 2005 and 2009 in the county of Jämtland, Sweden. SUBJECTS: All patients with CRC and adenomas with HGD that initially presented with symptoms to primary care and delivered FITs. MAIN OUTCOME MEASURE: The likelihood of a positive FIT in cases of CRC and adenomas with HGD; when analysing one, two or three samples. RESULTS: Of 195 patients, 160 delivered three-sample FITs. Using the 139 cases in which at least one sample was positive, the likelihood of detecting a positive sample upon analysis of only one of the three samples was 0.91 (95% CI: 0.85-0.95), indicating that 13 positive cases may have been missed. CONCLUSION: Use of a one-sample FIT instead of a three-sample FIT as a diagnostic aid may result in the missing of one tenth of symptomatic CRCs and adenomas with HGD.

Symptoms and risk factors of Cryptosporidium hominis infection in children: data from a large waterborne outbreak in Sweden.

Cryptosporidium is a major cause of diarrheal disease worldwide. In developing countries, this infection is endemic and in children, associated with growth faltering and cognitive function deficits, with the most severe impact on those aged <2 years. Little has been reported about symptoms and risk factors for children in industrialized countries, although the disease incidence is increasing in such regions. In November 2010, a large waterborne outbreak of C. hominis occurred in the city of Östersund in Sweden. Approximately 27,000 of the 60,000 inhabitants were symptomatic. We aimed to describe duration of symptoms and the risk factors for infection with C. hominis in children aged <15 years in a Western setting. Within 2 months after a boil water advisory, a questionnaire was sent to randomly selected inhabitants of all ages, including 753 children aged <15 years. Those with ≥3 loose stools/day were defined as cases of diarrhoea. The response rate was 70.3%, and 211 children (39.9%) fulfilled the case definition. Mean duration of diarrhoea was 7.5 days (median 6, range 1-80 days). Recurrence, defined as a new episode of diarrhoea after ≥2 days of normal stools, occurred in 52.5% of the cases. Significant risk factors for infection, besides living within the distribution area of the contaminated water plant, included a high level of water consumption, male sex, and a previous history of loose stools. The outbreak was characterized by high attack and recurrence rates, emphasizing the necessity of water surveillance to prevent future outbreaks.

Post-infection symptoms following two large waterborne outbreaks of Cryptosporidium hominis in Northern Sweden, 2010-2011.

BACKGROUND: In 2010-2011, two large waterborne outbreaks caused by Cryptosporidium hominis affected two cities in Sweden, Östersund and Skellefteå. We investigated potential post-infection health consequences in people who had reported symptoms compatible with cryptosporidiosis during the outbreaks using questionnaires. METHODS: We compared cases linked to these outbreaks with non-cases in terms of symptoms present up to eleven months after the initial infection. We examined if cases were more likely to report a list of symptoms at follow-up than non-cases, calculating odds ratios (OR) and 95 % confidence intervals (CI) obtained through logistic regression. RESULTS: A total of 872 (310 cases) and 743 (149 cases) individuals responded to the follow-up questionnaires in Östersund and Skellefteå respectively. Outbreak cases were more likely to report diarrhea (Östersund OR: 3.3, CI: 2.0-5.3. Skellefteå OR: 3.6, CI: 2.0-6.6), watery diarrhea (Östersund OR: 3.4, CI: 1.9-6.3. Skellefteå OR: 2.8, CI: 1.5-5.1) abdominal pain (Östersund OR: 2.1, CI: 1.4-3.3, Skellefteå OR: 2.7, CI: 1.5-4.6) and joint pain (Östersund OR: 2.0, CI: 1.2-3.3, Skellefteå OR: 2.0, CI: 1.1-3.6) at follow-up compared to non-cases. CONCLUSIONS: Our findings suggest that gastrointestinal- and joint symptoms can persist several months after the initial infection with Cryptosporidium and should be regarded as a potential cause of unexplained symptoms in people who have suffered from the infection.

Could it be colorectal cancer? General practitioners' use of the faecal occult blood test and decision making--a qualitative study.

BACKGROUND: Abdominal complaints are common reasons for contacting primary care physicians, and it can be challenging for general practitioners (GPs) to identify patients with suspected colorectal cancer (CRC) for referral to secondary care. The immunochemical faecal occult blood test (iFOBT) is used as a diagnostic aid in primary care, but it is unclear how test results are interpreted. Studies show that negative tests are associated with a risk of delayed diagnosis of CRC and that some patients with positive tests are not investigated further. The aim of this study was to explore what makes GPs suspect CRC and to investigate their practices regarding investigation and referral, with special attention on the use of iFOBTs. METHOD: Semi-structured individual interviews were conducted with eleven purposely selected GPs and registrars in Region Jämtland Härjedalen, Sweden, and subjected to qualitative content analysis. RESULTS: In the analysis of the interviews four categories were identified that described what made the physicians suspect CRC and their practices. Careful listening-with awareness of the pitfalls: Attentive listening was described as essential, but there was a risk of being misled by, for example, the patient's own explanations. Tests can help-the iFOBT can also complicate the diagnosis: All physicians used iFOBTs to various extents. In the absence of guidelines, all found their own ways to interpret and act on the test results. To refer or not to refer-safety margins are necessary: Uncertainty was described as a part of everyday work and was handled in different ways. Common vague symptoms could be CRC and thus justified referral with safety margins. Growing more confident-but also more humble: With increasing experience, the GPs described becoming more confident in their decisions but they were also more cautious. CONCLUSIONS: Listening carefully to the patient's history was essential. The iFOBT was frequently used as support, but there were considerable variations in the interpretation and handling of the results. The diagnostic process can be described as navigating uncertain waters with safety margins, while striving to keep the patient's best interests in mind. The iFOBT may be useful as a diagnostic aid in primary care, but more research and evidence-based guidelines are needed.

Large outbreak of Cryptosporidium hominis infection transmitted through the public water supply, Sweden.

In November 2010, ≈27,000 (≈45%) inhabitants of Östersund, Sweden, were affected by a waterborne outbreak of cryptosporidiosis. The outbreak was characterized by a rapid onset and high attack rate, especially among young and middle-aged persons. Young age, number of infected family members, amount of water consumed daily, and gluten intolerance were identified as risk factors for acquiring cryptosporidiosis. Also, chronic intestinal disease and young age were significantly associated with prolonged diarrhea. Identification of Cryptosporidium hominis subtype IbA10G2 in human and environmental samples and consistently low numbers of oocysts in drinking water confirmed insufficient reduction of parasites by the municipal water treatment plant. The current outbreak shows that use of inadequate microbial barriers at water treatment plants can have serious consequences for public health. This risk can be minimized by optimizing control of raw water quality and employing multiple barriers that remove or inactivate all groups of pathogens.