Impact of COVID-19 primary healthcare service restrictions on patients with chronic obstructive pulmonary disease in Cape Town, South Africa.

BACKGROUND: Patients with chronic obstructive pulmonary disease (COPD) typically experience multidimensional symptoms throughout the course of their disease, with burdensome physical symptoms, social isolation, and additional psychological suffering. COVID-19 lockdown resulted in restrictions on chronic care delivery at primary healthcare (PHC) facilities, and it is not known what the care experiences of patients with COPD were during this time. OBJECTIVES: To describe patient experiences of the impact of the lockdown on their needs and their experiences of the primary care received for their COPD. METHODS: The data reported in this paper are from a cohort of 49 patients with COPD receiving primary care, recruited in February and March 2020, before recruitment was paused for COVID-19 lockdown, for a feasibility stepped-wedge hybrid type II design randomised controlled trial of integrated person-centred palliative care in primary care for patients with COPD in Cape Town, South Africa. Data are open-text responses from participants who responded to a single question on a validated measure of primary care consultation empathy (CARE), and describe patient experiences of the impact of the lockdown on the primary care received for their COPD, prior to crossover to trial intervention. RESULTS: Thirty-two patients with COPD gave between 1 and 9 responses each to the open-ended question between March and December 2020. The average age of the participants was 58.6 years, and 53.1% (n=17) were female. Inductive analysis of the open-text data identified four main themes. Participants described decreased access to chronic care and a desire for more person-centred care in interactions with healthcare professionals. The socioeconomic ramifications of the COVID-19 lockdown added to the burden they experienced. CONCLUSION: The COVID-19 lockdown PHC service restrictions caused a disruption to the continuity of care for patients with COPD, with associated worry, anxiety and disappointment. Medication access was largely supported by the home delivery of chronic medication. We suggest that there are opportunities for providing more sustained support for patients with COPD through referrals to community health workers, and also through telephonic patient follow-up by primary care teams.

Maintaining wellbeing for South Africans receiving ART: the burden of pain and symptoms is greater with longer ART exposure.

BACKGROUND: Physical and psychological symptom burden among people with HIV infection is associated with poor quality of life, poorer treatment adherence, viral rebound and risk behaviour. Symptomatology has not been investigated among outpatients in sub-Saharan Africa. OBJECTIVE: To measure the seven-day period prevalence, burden and correlates of pain and other physical and psychological symptoms among HIV patients receiving antiretroviral therapy (ART). METHODS: This was a cross-sectional self-report study. A total of 378 patients were interviewed using validated tools in three South African public sector clinics. RESULTS: The most prevalent symptoms were feeling sad (64%), feeling irritable (61.6%), worry (60.8%), numbness and tingling in hands/ feet (59.8%), and sexual problems (51%). In multivariate analysis, later disease stage was associated with worse psychological symptom burden (beta = 0.359; 95% confidence interval (CI) 0.202 - 0.516; p < or = 0.001), global symptom burden (beta = 0.365; 95% CI 0.204 - 0.526; p < 0.001) and number of symptoms (beta = 0.308; 95% CI 0.150 - 0.465; p < 0.001). Those receiving treatment for a greater number of years also reported higher burden for physical (beta = 0.083; 95% CI 0.037 - 0.129; p < or = 0.001), psychological (beta = 0.068; 95% CI 0.019 - 0.117; p = 0.007) and global symptoms (beta = 0.065; 95% CI 0.016 - 0.115; p = 0.010), and a greater number of symptoms (beta = 0.081; 95% CI 0.032 - 0.130; p = 0.001). CONCLUSIONS: The data reveal a high symptom burden despite treatment. Detailed symptom assessment and control continues to be required in the era of treatment.

Assessment of antemortem tests used in the control of an outbreak of tuberculosis in llamas (Lama glama).

An outbreak of tuberculosis (TB) caused by Mycobacterium bovis in a llama herd is described. Over a 25-month period, a total of 70 llamas were selected for postmortem examination using four distinct criteria: clinical suspicion of disease (15 animals), positive tuberculin skin test result (three animals), antibody positive using a novel serological test (Rapid Test, 54 animals) and elective cull (five animals). Some animals qualified on more than one criterion. Gross lesions of TB were detected in 15 animals, with lung and lymph node lesions consistently observed. Samples were collected from 14 of 15 animals with visible lesions as well as those with no visible lesions, for histopathology and mycobacterial culture. All 14 llamas with visible lesions had caseonecrotic granulomatous lesions associated with acid-fast bacteria and variable mineralisation, and M bovis was isolated from 13. There were no histopathological lesions of TB in llamas with no grossly visible lesions, and M bovis was not isolated from any of these. The predictive value of suspicious gross lesions at postmortem examination was therefore high in the herd. Molecular typing results indicated that the outbreak was caused by a single strain likely to have originated from a local reservoir, probably cattle or wildlife. Antemortem indicators of infection assisted control of the outbreak, but no single test accurately identified all TB cases. Visible lesions were detected in nine of 15 llamas with clinical suspicion of disease, in two of three that had positive tuberculin skin test results and in 10 of 54 that were antibody positive; there was none (zero out of five) in llamas that were electively culled.

Use of synthetic peptides derived from the antigens ESAT-6 and CFP-10 for differential diagnosis of bovine tuberculosis in cattle.

In Great Britain an independent scientific review for the government has concluded that the development of a cattle vaccine against Mycobacterium bovis infection holds the best long-term prospect for tuberculosis control in British herds. A precondition for vaccination is the development of a complementary diagnostic test to differentiate between vaccinated animals and those infected with M. bovis so that testing and slaughter-based control strategies can continue alongside vaccination. To date bacillus Calmette-Guérin (BCG), an attenuated strain of M. bovis, is the only available vaccine for the prevention of tuberculosis. However, tests based on tuberculin purified protein derivative cannot distinguish between M. bovis infection and BCG vaccination. Therefore, specific antigens expressed by M. bovis but absent from BCG constitute prime candidates for differential diagnostic reagents. Recently, two such antigens, ESAT-6 and CFP-10, have been reported to be promising candidates as diagnostic reagents for the detection of M. bovis infection in cattle. Here we report the identification of promiscuous peptides of CFP-10 that were recognized by M. bovis-infected cattle. Five of these peptides were formulated into a peptide cocktail together with five peptides derived from ESAT-6. Using this peptide cocktail in T-cell assays, M. bovis-infected animals were detected, while BCG-vaccinated or Mycobacterium avium-sensitized animals did not respond. The sensitivity of the peptide cocktail as an antigen in a whole-blood gamma interferon assay was determined using naturally infected field reactor cattle, and the specificity was determined using blood from BCG-vaccinated and noninfected, nonvaccinated animals. The sensitivity of the assay in cattle with confirmed tuberculosis was found to be 77.9%, with a specificity of 100% in BCG-vaccinated or nonvaccinated animals. This compares favorably with the specificity of tuberculin when tested in noninfected or vaccinated animals. In summary, our results demonstrate that this peptide cocktail can discriminate between M. bovis infection and BCG vaccination with a high degree of sensitivity and specificity.