Nipah and Hendra viruses are deadly zoonotic paramyxoviruses with a case fatality rate of upto 75%. The viruses belong to the genus henipavirus in the family Paramyxoviridae, a family of negative-sense single-stranded RNA viruses. The natural reservoirs of NiV and HeV are bats (flying foxes) in which the virus infection is asymptomatic. The intermediate hosts for NiV and HeV are swine and equine, respectively. In humans, NiV infections result in severe and often fatal respiratory and neurological manifestations. The Nipah virus was first identified in Malaysia and Singapore following an outbreak of encephalitis in pig farmers and subsequent outbreaks have been reported in Bangladesh and India almost every year. Due to its extreme pathogenicity, pandemic potential, and lack of established antiviral therapeutics and vaccines, research on henipaviruses is highly warranted so as to develop antivirals or vaccines that could aid in the prevention and control of future outbreaks.
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19 August 2022 in Indian Journal of Animal Research
Background: Higher prevalence of ESBL producers is alarming in dairy sector. So limiting antimicrobial use may curtail the selection and persistence of predominant ESBL and conjugative plasmids among strains. The study was aimed to determine the occurrence of extended-spectrum beta-lactamase (ESBL) producing E. coli as well as their genetic diversity, antimicrobial resistance and integrons in bovines. Methods: A total of 180 faecal samples were screened for the presumptive ESBL producing E. coli isolates. All ESBL producing isolates were subjected to the screening test and were confirmed as ESBL producers by double disc. Further, these ESBL producers were tested for the presence of bla genes and those found positive were tested for multidrug resistance (MDR) by disk diffsion. MDR positive isolates were further tested for the presence of intI 1, intI 2 and intI 3 genes. Result: A total of 360 presumptive ESBL producing E. coli isolates were obtained. Out of which, 154 (42.77%) isolates were found to be resistant and were confirmed as ESBL producers. Of 154 ESBL isolates, 120 (77.92%) isolates carried the gene/s screened for blaTEM, blaCTX-M and blaSHV genes are were declared as multi drug resistant. Out of 120 MDR isolates, 59 tested positive for the integron gene.