ABSTRACT
Microbial coinfections can increase the morbidity and mortality rates of viral respiratory diseases. Therefore, this study aimed to determine the pooled prevalence of fungal coinfections in coronavirus disease 2019 (COVID-19) patients. Web of Science, Medline, Scopus, and Embase were searched without language restrictions to identify the related research on COVID-19 patients with fungal coinfections from December 1, 2019, to December 30, 2020. A random-effects model was used for analysis. The sample size included 2,246 patients from 8 studies. The pooled prevalence of fungal coinfections was 12.60%. The frequency of fungal subtype coinfections was 3.71% for Aspergillus, 2.39% for Candida, and 0.39% for other. The World Health Organization’s Regional Office for Europe and Regional Office for Southeast Asia had the highest (23.28%) and lowest (4.53%) estimated prevalence of fungal coinfection, respectively. Our findings showed a high prevalence of fungal coinfections in COVID-19 cases, which is a likely contributor to mortality in COVID-19 patients. Early identification of fungal pathogens in the laboratory for COVID-19 patients can lead to timely treatment and prevention of further damage by this hidden infection.
ABSTRACT
Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has infected many people around the world. Children are considered an important target group for SARS-CoV-2, as well as other viral infections such as respiratory syncytial virus infection. Both SARS-CoV-2 and respiratory syncytial virus can affect the respiratory tract. Coinfection of SARS-CoV-2 and respiratory syncytial virus can pose significant challenges in terms of diagnosis and treatment in children. This review compares the symptoms, diagnostic methods, and treatment of COVID-19 and respiratory syncytial virus infection in children.
ABSTRACT
Coronaviruses, which have been known to cause diseases in animals since the 1930s, utilize cellular components during their replication cycle. Lipids play important roles in viral infection, as coronaviruses target cellular lipids and lipid metabolism to modify their host cells to become an optimal environment for viral replication. Therefore, lipids can be considered as potential targets for the development of antiviral agents. This review provides an overview of the roles of cellular lipids in different stages of the life cycle of coronaviruses.
ABSTRACT
Background: Non-structural protein 4 [NSP4] is a critical protein for rotavirus [RV] replication and assembly. This protein has multiple domains and motifs that predispose its function and activity. NSP4 has a sequence divergence in human and animal RVs. Recently, 14 genotypes [E1-E14] of NSP4 have been identified, and E1 and E2 have been shown to be the most common genotypes in human
Methods: The gene and protein sequence of NSP4 in RV-positive samples were inspected with the aim of NSP4 genotyping and variation analysis in viroporin and other domains. P and G typings of RV samples were carried out by WHO primers using a semi-multiplex PCR method. Non-typeable RV samples were amplified by conserved primers and sequenced
Results: In viroporin and enterotoxin, conserved sequence was detected, and amino acids substitution with the same biochemical properties was found
Conclusion: Association of NSP4 genotype with P or G genotyping G1/G9 correlates with E1 genogroups. In electrophoretyping of RV, E2 genotype had a short pattern when compared to E1
ABSTRACT
Background and Aims: Hepatitis E virus [HEV] is considered as one of the common causes of acute viral hepatitis in the world, particularly in the developing countries. It also causes fulminant hepatitis in pregnant women. Although HEV infection in Iran is endemic, there are numerous reports of epidemics caused by this infection in this part of the world. This study aimed to determine seroprevalence of HEV among patients with acute hepatitis symptoms in Ahvaz, Iran
Materials and Methods: In this cross-sectional study patients were selected based on laboratory findings related to acute hepatitis including elevated serum bilirubin levels, markedly elevated levels of liver enzymes such as alanine aminotransferase, aspartate aminotransferase and mild increases in alkaline phosphatase activity.The plasma samples were tested for IgM/IgG Hepatitis E antibody [anti-HEV] using enzyme-linked immunosorbent assay
Results: Out of 241 study patients, 125 [51.9%] were male and 116 [48.1%] female. The mean age+/-SD was 31.53+/-17.17 years. The results indicated 27.4% prevalence of anti-HEV antibodies among patients with acute hepatitis in Ahvaz
Conclusions: In regard with the findings, HEV can play an important role in incidence of hepatitis. The study needs to be conducted in high-risk groups and in general populatios