Changing pattern of prevalence, genetic diversity, and mixed infections of viruses associated with acute gastroenteritis in pediatric patients in New Delhi, India

2017 ◽  
Vol 90 (3) ◽  
pp. 469-476 ◽  
Author(s):  
Shipra Gupta ◽  
Anuja Krishnan ◽  
Sumit Sharma ◽  
Praveen Kumar ◽  
Satinder Aneja ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Acute Gastroenteritis ◽  
Pediatric Patients ◽  
Mixed Infections ◽  
New Delhi

Molecular epidemiology and genetic diversity of norovirus infection in children with acute gastroenteritis in Bangladesh, 2014‐2019

2021 ◽  
Author(s):  
Shuvra Kanti Dey ◽  
Nadim Sharif ◽  
Baki Billah ◽  
Tanjir Tarek Ibn Siddique ◽  
Tarequl Islam ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Molecular Epidemiology ◽  
Acute Gastroenteritis

scholarly journals Human bocavirus genotypes 1, 2, and 3 circulating in pediatric patients with acute gastroenteritis in Chiang Mai, Thailand, 2012–2018

2021 ◽  
Vol 14 (2) ◽  
pp. 179-186
Author(s):  
Nattika Nantachit ◽  
Pakawat Kochjan ◽  
Pattara Khamrin ◽  
Kattareeya Kumthip ◽  
Niwat Maneekarn
Keyword(s):  
Acute Gastroenteritis ◽  
Pediatric Patients ◽  
Human Bocavirus ◽  
Chiang Mai

scholarly journals Prevalence and Genetic Diversity of Group A Rotavirus Genotypes in Moscow (2019–2020)

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 674
Author(s):  
Anton Yuzhakov ◽  
Ksenia Yuzhakova ◽  
Nadezhda Kulikova ◽  
Lidia Kisteneva ◽  
Stanislav Cherepushkin ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Genetic Diversity ◽  
Acute Gastroenteritis ◽  
Rt Pcr ◽  
Clinical Hospital ◽  
Group A Rotavirus ◽  
Group A ◽  
First Time ◽  
Common Combination ◽  
Children Under 5

Group A rotavirus (RVA) infection is the leading cause of hospitalization of children under 5 years old, presenting with symptoms of acute gastroenteritis. The aim of our study was to explore the genetic diversity of RVA among patients admitted to Moscow Infectious Disease Clinical Hospital No. 1 with symptoms of acute gastroenteritis. A total of 653 samples were collected from May 2019 through March 2020. Out of them, 135 (20.67%) fecal samples were found to be positive for rotavirus antigen by ELISA. RT-PCR detected rotavirus RNA in 80 samples. Seven G-genotypes (G1, G2, G3, G4, G8, G9, and G12) and three P-genotypes (P[8], P[4], and P[6]) formed 9 different combinations. The most common combination was G9P[8]. However, for the first time in Moscow, the combination G3P[8] took second place. Moreover, all detected viruses of this combination belonged to Equine-like G3P[8] viruses that had never been detected in Russia before. The genotype G8P[8] and G9P[4] rotaviruses were also detected in Moscow for the first time. Among the studied rotaviruses, there were equal proportions of Wa and DS-1-like strains; previous studies showed that Wa-like strains accounted for the largest proportion of rotaviruses in Russia.

Emergence of tomato leaf curl New Delhi virus in Italy: estimation of incidence and genetic diversity

2019 ◽  
Vol 68 (3) ◽  
pp. 601-608 ◽  
Author(s):  
S. Panno ◽  
A. G. Caruso ◽  
E. Troiano ◽  
M. Luigi ◽  
A. Manglli ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tomato Leaf ◽  
New Delhi ◽  
Tomato Leaf Curl ◽  
Leaf Curl

scholarly journals Thrips as the Transmission Bottleneck for Mixed Infection of Two Orthotospoviruses

Plants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 509
Author(s):  
Kaixi Zhao ◽  
Cristina Rosa
Keyword(s):  
Genetic Diversity ◽  
Virus Replication ◽  
Mixed Infection ◽  
Viral Fitness ◽  
Mixed Infections ◽  
Virus Species ◽  
Necrotic Spot ◽  
Tomato Spotted Wilt ◽  
Transmission Bottleneck

Mixed infections provide opportunities for viruses to increase genetic diversity by facilitating genomic reassortment or recombination, and they may lead to the emergence of new virus species. Mixed infections of two economically important orthotospoviruses, Tomato spotted wilt orthotospovirus (TSWV) and Impatiens necrotic spot orthotospovirus (INSV), were found in recent years, but no natural reassortants between INSV and TSWV were ever reported. The goal of this study was to establish how vector preferences and the ability to transmit INSV and TSWV influence transmission and establishment of mixed infections. Our results demonstrate that thrips prefer to oviposit on TSWV and INSV mixed-infected plants over singly infected or healthy plants, providing young nymphs with the opportunity to acquire both viruses. Conversely, we observed that thrips served as a bottleneck during transmission and favored transmission of one of the two viruses over the second one, or over transmission of both viruses simultaneously. This constraint was relaxed in plants, when transmission of TSWV and INSV occurred sequentially, demonstrating that plants serve as orthotospovirus permissive hosts, while thrips serve as a bottleneck. Viral fitness, as measured by virus replication, transmission, and competition with other viral strains, is not well studied in mixed infection. Our study looks at the success of transmission during mixed infection of orthotopoviruses, enhancing the understanding of orthotospovirus epidemiology and evolution.

scholarly journals Cryptococcus genetic diversity and mixed infections in Ivorian HIV patients: A follow up study

2019 ◽  
Vol 13 (11) ◽  
pp. e0007812 ◽  
Author(s):  
Fulgence Kondo Kassi ◽  
Pascal Drakulovski ◽  
Virginie Bellet ◽  
Frédéric Roger ◽  
Amélie Chabrol ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mixed Infections ◽  
Hiv Patients ◽  
Follow Up Study

scholarly journals Natural Hosts and Genetic Diversity of the Emerging Tomato Leaf Curl New Delhi Virus in Spain

2019 ◽  
Vol 10 ◽  
Author(s):  
Miguel Juárez ◽  
María Pilar Rabadán ◽  
Luis Díaz Martínez ◽  
Monia Tayahi ◽  
Ana Grande-Pérez ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tomato Leaf ◽  
New Delhi ◽  
Natural Hosts ◽  
Tomato Leaf Curl ◽  
Leaf Curl

scholarly journals Genetic Diversity of Norovirus and Sapovirus in Hospitalized Infants with Sporadic Cases of Acute Gastroenteritis in Chiang Mai, Thailand

2004 ◽  
Vol 42 (3) ◽  
pp. 1305-1307 ◽  
Author(s):  
G. S. Hansman ◽  
K. Katayama ◽  
N. Maneekarn ◽  
S. Peerakome ◽  
P. Khamrin ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Acute Gastroenteritis ◽  
Chiang Mai ◽  
Sporadic Cases

Mixed viral infections causing acute gastroenteritis in children in a waterborne outbreak

2010 ◽  
Vol 138 (9) ◽  
pp. 1227-1234 ◽  
Author(s):  
S. RÄSÄNEN ◽  
S. LAPPALAINEN ◽  
S. KAIKKONEN ◽  
M. HÄMÄLÄINEN ◽  
M. SALMINEN ◽  
...  
Keyword(s):  
Campylobacter Jejuni ◽  
Acute Gastroenteritis ◽  
Viral Infections ◽  
Aichi Virus ◽  
Mixed Infections ◽  
Hospitalized Children ◽  
Point Scale ◽  
Viral Pathogens ◽  
Waterborne Outbreak ◽  
Stool Specimens

SUMMARYWe examined stool specimens for viral pathogens from 50 children referred to hospital due to acute gastroenteritis (AGE) resulting from consuming drinking water contaminated with sewage in a Finnish community using PCR methods. Rotavirus was detected in 33 (66%), human calicivirus in 31 (62%), and both in 40% of cases. Of the caliciviruses, 20/31 (65%) were noroviruses and 11 (35%) sapoviruses. Furthermore, Aichi virus was detected in 25 (50%), adenovirus in six (12%) and bocavirus in four (8%) cases.Campylobacter jejuniwas present in 20 (61%) andSalmonellain four (12%) of the 33 stools cultured for bacteria. On a 20-point scale median severity score of AGE in the 28 hospitalized children was 17; the severity was similar regardless of viruses detected. Bloody diarrhoea occurred only whenC. jejuniwas present. To conclude, massive exposure to several AGE viruses caused mixed infections and severe AGE regardless of the aetiological agents.

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