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1.
J Immunoassay Immunochem ; 45(3): 233-246, 2024 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-38706220

RESUMO

Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), and Human Immunodeficiency Virus (HIV) remain a public health challenge globally. This study determined the prevalence and coinfection of HBV, HCV, and HIV among patients visiting Maria Goretti Hospital, Grimard Catholic Hospital, and Good News Hospital Anyigba, Kogi State. In a cross-sectional study, sera samples collected from 400 consenting patients were screened for HBV, HCV, and HIV using commercial immunodiagnostic test kits. Of the 400 subjects, 12 (3.0%), 4 (1.0%), and 16 (4.0%) were infected with HBV, HCV, and HIV, respectively. One participant was co-infected with HCV and HIV, while none was simultaneously infected with HBV and HIV. Participants aged 11-20 years had higher hepatitis B-surface antigenemia, while ages 21-30 years and 31-40 years had higher prevalence of HCV and HIV, respectively. Contrary to HBV and HCV positivity, HIV seropositivity was significantly predicted by the ages of exposure (p = 0.002). Males and females were equally infected with HBV (3.0% each), while more males than females were infected with HCV (1.5%) and HIV (4.6%). However, the difference between the occurrence of viral infections and patients' sex was not significant (p > 0.05). The single participants were more predisposed to HBV while the married subjects had more HCV and HIV mono-infection. However, neither the occurrence of HBV nor HCV or HIV was significantly predicted by the marital status of the individuals (p > 0.05). Subjects with no formal education had a higher positivity rate of HCV and HIV compared to other levels of education, while the tertiary level of education had higher exposure to HBsAg. Occupationally, students were more predisposed to HBV and HCV, while the unemployed participants were more predisposed to HIV. However, neither education nor the occupation of participants was significantly related to any of the viral infections (p > 0.05). Lack of knowledge of disease prevention significantly influenced the occurrence of HBV (p = 0.02), HCV (p = 0.04), and HIV (p = 0.04). Conclusively, the status of HBV, HCV, and HIV infection is low compared with findings of previous epidemiological studies in the area. However, the continuous circulation of the three viral infections and the high disease occurrence in the poorly informed participants suggest the need for increased public health education about infection control and prevention strategies in the area.


Assuntos
Coinfecção , Infecções por HIV , Hepatite B , Hepatite C , Humanos , Masculino , Feminino , Adulto , Adolescente , Hepatite C/epidemiologia , Hepatite C/sangue , Infecções por HIV/epidemiologia , Infecções por HIV/sangue , Hepatite B/epidemiologia , Hepatite B/sangue , Hepatite B/imunologia , Adulto Jovem , Estudos Soroepidemiológicos , Criança , Estudos Transversais , Coinfecção/epidemiologia , Pessoa de Meia-Idade , Hospitais , Hepacivirus/imunologia , Hepacivirus/isolamento & purificação , Idoso , Vírus da Hepatite B/imunologia , Vírus da Hepatite B/isolamento & purificação
2.
J Infect ; 88(6): 106169, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38697269

RESUMO

Gastroenteritis viruses are the leading etiologic agents of diarrhea in children worldwide. We present data from thirty-three (33) eligible studies published between 2003 and 2023 from African countries bearing the brunt of the virus-associated diarrheal mortality. Random effects meta-analysis with proportion, subgroups, and meta-regression analyses were employed. Overall, rotavirus with estimated pooled prevalence of 31.0 % (95 % CI 24.0-39.0) predominated in all primary care visits and hospitalizations, followed by norovirus, adenovirus, sapovirus, astrovirus, and aichivirus with pooled prevalence estimated at 15.0 % (95 % CI 12.0-20.0), 10 % (95 % CI 6-15), 4.0 % (95 % CI 2.0-6.0), 4 % (95 % CI 3-6), and 2.3 % (95 % CI 1-3), respectively. Predominant rotavirus genotype was G1P[8] (39 %), followed by G3P[8] (11.7 %), G9P[8] (8.7 %), and G2P[4] (7.1 %); although, unusual genotypes were also observed, including G3P[6] (2.7 %), G8P[6] (1.7 %), G1P[6] (1.5 %), G10P[8] (0.9 %), G8P[4] (0.5 %), and G4P[8] (0.4 %). The genogroup II norovirus predominated over the genogroup I-associated infections (84.6 %, 613/725 vs 14.9 %, 108/725), with the GII.4 (79.3 %) being the most prevalent circulating genotype. In conclusion, this review showed that rotavirus remains the leading driver of viral diarrhea requiring health care visits and hospitalization among under-five years children in Africa. Thus, improved rotavirus vaccination in the region and surveillance to determine the residual burden of rotavirus and the evolving trend of other enteric viruses are needed for effective control and management of cases.


Assuntos
Gastroenterite , Humanos , Gastroenterite/virologia , Gastroenterite/epidemiologia , Pré-Escolar , Lactente , África/epidemiologia , Prevalência , Diarreia/virologia , Diarreia/epidemiologia , Rotavirus/genética , Rotavirus/isolamento & purificação , Rotavirus/classificação , Recém-Nascido , Genótipo , Viroses/epidemiologia , Viroses/virologia , Infecções por Rotavirus/epidemiologia , Infecções por Rotavirus/virologia , Vírus/classificação , Vírus/genética , Vírus/isolamento & purificação
3.
Vaccines (Basel) ; 12(6)2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38932319

RESUMO

Noroviruses constitute a significant aetiology of sporadic and epidemic gastroenteritis in human hosts worldwide, especially among young children, the elderly, and immunocompromised patients. The low infectious dose of the virus, protracted shedding in faeces, and the ability to persist in the environment promote viral transmission in different socioeconomic settings. Considering the substantial disease burden across healthcare and community settings and the difficulty in controlling the disease, we review aspects related to current knowledge about norovirus biology, mechanisms driving the evolutionary trends, epidemiology and molecular diversity, pathogenic mechanism, and immunity to viral infection. Additionally, we discuss the reservoir hosts, intra-inter host dynamics, and potential eco-evolutionary significance. Finally, we review norovirus vaccines in the development pipeline and further discuss the various host and pathogen factors that may complicate vaccine development.

4.
Interdiscip Perspect Infect Dis ; 2022: 5743106, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35140784

RESUMO

The first 140 days of pregnancy are critical as regards rubella virus infection because of the likelihood of a poor pregnancy outcome. This study was undertaken to investigate the likelihood of exposure to poor pregnancy outcomes due to seroprevalence of rubella among selected pregnant women attending Mile Four Hospital, Abakaliki, Ebonyi State, Nigeria. The seroprevalence of rubella immunoglobulin M (IgM) antibodies was investigated among pregnant women. A total of 187 sera samples collected from the women were screened for rubella virus IgM antibody using the enzyme-linked immunosorbent assay (ELISA). The results obtained were analyzed using SPSS. The chi square test was performed at a P value of 0.05 significance and at a 95% confidence interval. Of the 187 pregnant women, 35 (18.72%) were positive for the rubella virus. Pregnant women within 26-30 years of age had the highest prevalence (26.15%), while those aged 35-40 years had the least prevalence. Married women had the highest prevalence (20.0%), followed by singles (16.67%) and widows (15.38%), while divorced pregnant women recorded the least prevalence (9.20%). Pregnant women with no formal education were more predisposed to rubella virus (22.22%) infection compared to their educated counterparts. Occupationally, full-time housewives had the highest prevalence (24.26%). The infection rates seemed to wane as pregnancy advanced. The first trimester had the highest prevalence (21.88%), followed by the second trimester (18.84%) and the third trimester (17.44%). Pregnant women living in urban areas had higher IgM seroprevalence (20.18%) than those in rural areas (16.67%). Furthermore, grand multigravidas were more infected (22.73%) than primigravidas (14.52%) and multigravidas (20.39%). The seroprevalence of rubella in this study was high, and it calls for general surveillance and mass immunization of children and females of childbearing age in the area to help reduce the incidence of congenital rubella syndrome.

5.
J Environ Public Health ; 2021: 9996885, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34876911

RESUMO

Background: The overlap of malaria and Hepatitis B Virus (HBV) infections present a major threat to public health throughout endemic countries of tropical and sub-Saharan Africa. There is a paucity of data on the prevalence and associated factors of malaria and HBV infections among pregnant women in Ejule, a semiurban area of Nigeria. Therefore, the current study was designed to assess the seroprevalence of malaria and HBV among pregnant women attending antenatal clinics in Ejule Metropolis. Materials and Methods: In a hospital-based cross-sectional study, blood samples collected from 200 apparently healthy pregnant women at the Ilemona Clinic were screened for Plasmodium falciparum (P. falciparum) and HBsAg using histidine-rich protein 2 (HRP2) and hepatitis B surface antigen (HBsAg) rapid diagnostic tests (RDTs), respectively. Relevant sociodemographic and putative risk factor information was obtained with structured questionnaires. Results: The prevalence of the infections was 44 (22%), 5 (2.5%), and 1 (0.5%) for P. falciparum monoinfection and HBV monoinfection and coinfection, respectively. Single and concurrent infections peaked at ages 31-40 years but decreased with older ages. High P. falciparum, 31 (59.62%), and HBV 2 (3.85%) infection were observed among those without formal education. Contrary to ages, occupation, and knowledge of infection, malaria parasitemia differed significantly with lower educational qualification (p ≤ 0.001), being single (p=0.001), and inconsistent use of insecticide-treated bed nets (ITNs) (p=0.04, OR = 5, CI: 0.10-0.47). History of blood donation (OR = 5, p=0.04, CI: 1.10-32.80) and multiple sex partners (OR = 11.9, p=0.01, CI: 0.01-0.93) were found to be significantly associated with hepatitis B surface antigenemia rate during pregnancy. No evidence of HBV infection was observed in women with a history of HBV vaccination. Conclusions: Malaria is still highly prevalent among pregnant women due to high illiteracy and noncompliance to using ITNs. Therefore, routine screening and educating pregnant mothers are crucial in eliminating malaria in endemic settings. The low rate of hepatitis B and coinfection with malaria shows that further improvement in HBV vaccination could considerably reduce the disease burden among pregnant women.


Assuntos
Hepatite B , Malária , Complicações Infecciosas na Gravidez , Adulto , Idoso , Estudos Transversais , Feminino , Hepatite B/epidemiologia , Humanos , Malária/epidemiologia , Pessoa de Meia-Idade , Nigéria/epidemiologia , Gravidez , Complicações Infecciosas na Gravidez/epidemiologia , Gestantes , Prevalência , Fatores de Risco , Estudos Soroepidemiológicos
6.
Viral Immunol ; 33(5): 391-395, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32031904

RESUMO

Globally, coinfection of human immunodeficiency virus (HIV) patients with Hepatitis B Virus (HBV) is associated with an accelerated progression of HIV disease and higher mortality resulting from complications of liver-related disease. Despite the public health importance, data are lacking on this subject in the study area. Therefore, we evaluated the prevalence and risk factors for HIV/HBV coinfection among HIV patients accessing antiretroviral treatment in Lokoja, Nigeria. In a cross-sectional study, sera from randomly selected 200 consenting HIV patients were screened for hepatitis B surface antigen (HBsAg) using The Commercial Rapid Immunoassay Test Kit. Demographic variables and putative risk factors of HBV transmission were obtained using structured questionnaire. HBsAg prevalence was 8.0% in the sampled group with higher seropositivity rate in the age group, 40-49 years, followed by those 20-29 years of age, whereas the other age groups had zero positivity rates each. The difference between seroprevalence rates in relation to patients' age and sex was not statistically significant (p > 0.05). Patients with no formal education, who were married and were housewives, had higher rates of HBV infection compared with others in the group. Although not statistically significant (p > 0.05), the likelihood of exposure to HBV was higher among patients who were engaged in multiple sexual behaviors, alcoholism, smoking, sharing of sharps, ear piercing, and had history of blood transfusion. Conclusively, HIV/HBV coinfection rate in our study is comparable to other localities and thus, affirm the endemicity in the study area. The need to strengthen health education of the masses to desist from risky behaviors is recommended to reduce the morbidity and mortality arising from HIV/HBV comorbidity.


Assuntos
Coinfecção/epidemiologia , Coinfecção/virologia , Infecções por HIV/epidemiologia , Hepatite B/epidemiologia , Adolescente , Adulto , Antirretrovirais/uso terapêutico , Coinfecção/mortalidade , Estudos Transversais , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/mortalidade , Comportamentos de Risco à Saúde , Antígenos de Superfície da Hepatite B/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Nigéria/epidemiologia , Prevalência , Fatores de Risco , Estudos Soroepidemiológicos , Inquéritos e Questionários , Adulto Jovem
7.
Afr Health Sci ; 19(2): 1938-1946, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31656477

RESUMO

BACKGROUND: Co-infection of HBV with HIV is associated with significant morbidity and mortality globally. In spite of increasing reports of HIV/HBV co-morbidities in Nigeria, little or no data exists on this subject in Anyigba. Therefore, we determined the prevalence of hepatitis B surface antigenemia among HIV positive patients on anti-retroviral treatment programme in Anyigba, Kogi State, North-Central Nigeria. METHODS: Sera samples obtained from 200 consented HIV patients were screened for HBsAg using the commercial rapid test membrane-based qualitative immunoassay. A structured questionnaire was used to collect information on patients' demographic variables and probable risk factors for HBV transmission. RESULTS: Overall, 3.5% of HIV patients were seropositive to HBsAg and the difference between seroprevalence rates and patients' age as well as gender was not statistically significant (p>0.05). There was significant difference between patients' demographic variables such as marital status (p=0.013) and educational level (p=0.004) and HBsAg seropositivity. Patients with a history of surgical applications (p=0.01) and who indulged in alcoholism (p=0.03) significantly had higher rates of concomitant HIV/HBV infection in the study area. CONCLUSION: Our findings underscore the importance of routine screening for HBV in the HIV infected populations especially in developing countries where the infection is endemic. We advocate for public enlightenment programmes on routes of virus acquisitions with a view to reduce the morbidity and mortality associated HIV/HBV co-infection.


Assuntos
Infecções por HIV/epidemiologia , Antígenos de Superfície da Hepatite B/sangue , Vírus da Hepatite B/isolamento & purificação , Hepatite B/epidemiologia , Adolescente , Adulto , Fármacos Anti-HIV/uso terapêutico , Terapia Antirretroviral de Alta Atividade , Coinfecção/epidemiologia , Estudos Transversais , Feminino , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Hepatite B/complicações , Hepatite B/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Nigéria/epidemiologia , Prevalência , Fatores de Risco , Estudos Soroepidemiológicos , Adulto Jovem
8.
Viral Immunol ; 32(4): 186-191, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-31021251

RESUMO

Globally, infection of pregnant women by human immunodeficiency virus (HIV), hepatitis C virus (HCV), and hepatitis B virus (HBV) pose a significant health challenge for not just the mothers but also the newborn infant. This study was undertaken to assess the prevalence of HIV, HCV, and HBV among pregnant women attending antenatal clinic in Kogi State University Teaching Hospital (KSUTH), Anyigba, Nigeria. Sera samples obtained from 200 consented pregnant women were screened for hepatitis B surface antigen (HBsAg), anti-HCV, and anti-HIV antibodies using commercially available immunoassay test kit. Demographic variables and obstetric characteristic were obtained using structured questionnaire. Of the 200 sera tested, the seroprevalence rates were 1.0%, 0.5%, and 8.5% for HBsAg, anti-HCV, and anti-HIV antibodies, respectively. Although 0.5% were coinfected with HIV/HCV, none was simultaneously infected by the three viruses. Age, marital status, trimester, and educational and occupational status did not significantly affect the prevalence of HIV, HCV, and HBV infections. However, factors such as history of abortion/miscarriage (p = 0.04), intravenous drug use (p = 0.001), and history of other sexually transmitted infection (p = 0.01) were significantly higher in relation to HIV seropositivity. In conclusion, findings from this study revealed high HIV seroprevalence and a clear decline of hepatitis C and B infection prevalence compared with previous epidemiological data. Reason for the latter could be attributed to the current efforts to reduce mother-to-child transmission and possible HBV vaccination programs. High burden of HIV infection in our study suggests the needs to strengthen the national prevention programs including education of the people on the risk factors of HIV transmission.


Assuntos
Doenças Assintomáticas/epidemiologia , Infecções por HIV/epidemiologia , Hepatite B/epidemiologia , Hepatite C/epidemiologia , Complicações Infecciosas na Gravidez/epidemiologia , Adolescente , Adulto , Feminino , Anticorpos Anti-HIV/sangue , Antígenos de Superfície da Hepatite B/sangue , Anticorpos Anti-Hepatite C/sangue , Hospitais de Ensino , Humanos , Nigéria/epidemiologia , Gravidez , Fatores de Risco , Estudos Soroepidemiológicos , Adulto Jovem
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