Muthannan Andavar Ramakrishnan

Learn More
Rabies is endemic and an important zoonosis in India. There are very few reports available on molecular epidemiology of rabies virus of Indian origin. In this study to know the dynamics of rabies virus, a total of 41 rabies positive brain samples from dogs, cats, domestic animals, wildlife, and humans from 11 states were subjected to RT-PCR amplification of(More)
An investigation was carried out to study the antibiotic sensitivity of avian strains of Pasteurella multocida and to select an effective antimicrobial agent for control of avian pasteurellosis in India. A total of 123 strains of P. multocida recently isolated from different avian species (chicken, duck, turkey, quail, and goose), from different regions of(More)
This review converses the Zika virus which has attained global concern due to its rapid pandemic potential and impact on humans. Though Zika virus was first isolated in 1947, till the recent large-scale outbreak which occurred in Micronesia, in 2007, the virus was placed into the innocuous pathogen category. The World Health Organization on 1 February 2016(More)
Pasteurella multocida serogroup B:2, a causative agent of haemorrhagic septicaemia (HS) in cattle and buffalo especially in tropical regions of Asian and African countries, is known to possess several outer membrane proteins (OMPs) as immunogenic antigens. In the present study, omp87 gene encoding for 87 kDa OMP (Omp87) protein of P. multocida serogroup B:2(More)
Water-borne transmission has been suggested as an important transmission mechanism for Influenza A (IA) viruses in wild duck populations; however, relatively few studies have attempted to detect IA viruses from aquatic habitats. Water-isolated viruses have rarely been genetically characterized and evaluation for persistence in water and infectivity in(More)
Outer membrane lipoproteins are widely distributed in Gram-negative bacteria which are involved in diverse mechanisms of physiology/pathogenesis. Various pathogenic bacterial strains belonging to the family-Pasteurellaceae have several surface exposed virulence factors including VacJ/VacJ-like lipoproteins. In the present study, vacJ gene encoding for VacJ(More)
Pasteurella multocida, a Gram-negative bacterial pathogen, known to affect a wide range of domestic as well as wild animal and avian species throughout the world by causing either systemic or localized infections termed as ‘pasteurellosis’. P. multocida isolates are known to possess type IV fimbriae (pili) as one of the major virulence factors based on(More)
BACKGROUND The rapidly expanding availability of de novo sequencing technologies can greatly facilitate efforts to monitor the relatively high mutation rates of influenza A viruses and the detection of quasispecies. Both the mutation rates and the lineages of influenza A viruses are likely to play an important role in the natural history of these viruses(More)
A single-step reverse transcription loop mediated isothermal amplification (RT-LAMP) assay targeting NS1 - a highly conserved gene among BTV serotypes was optimized and validated with seven serotypes: BTV-1, BTV-2, BTV-9, BTV-10, BTV-16, BTV-21 and BTV-23. The relative sensitivity of the assay was 0.3 TCID50 and no cross reactivity could be observed with(More)
Wild ducks of the genus Anas represent the natural hosts for a large genetic diversity of influenza A viruses. In these hosts, co-infections with different virus genotypes are frequent and result in high rates of genetic reassortment. Recent genomic data have provided information regarding the pattern and frequency of these reassortant viruses in duck(More)