Publications by authors named "Rajamannar V"

Aedes aegypti and Aedes albopictus mosquitoes spread major vector-borne viral diseases in tropical and sub-tropical regions of the globe. In this study, we sequenced the genome of Indian Ae. aegypti and Ae.

View Article and Find Full Text PDF

Background Objectives: Scrub typhus, caused by Orientia tsutsugamushi present in small mammals harbouring the ectoparasites. A study was undertaken to detect the pathogen present in small mammals and its ectoparasites in the scrub typhus-reported areas.

Methods: The small mammals (rodents/shrews) and its ectoparasites were screened for O.

View Article and Find Full Text PDF
Article Synopsis
  • * Other mite-borne diseases prevalent in India include scabies from Sarcoptes scabiei, dermatitis and trombiculosis from Pyemotidae, and Demodicosis from Demodex mites.
  • * There is a growing concern about the resurgence of mite-borne diseases, particularly scrub typhus, underscoring the need for improved control measures against mite vectors and the associated rodents in India.
View Article and Find Full Text PDF

Japanese encephalitis (JE) is a very serious public health problem in India and the conducive environment permit its emergence in non-endemic areas in the country. There are constant changes taking place in the pattern of current agricultural practices and vector breeding habitats which had far-reaching consequences on the epidemiology of JE and the severity of epidemic outbreaks today. Due to the continuous ecological changes taking place, vectors changed in their breeding dynamics, feeding, and resting behavior and started invading previously non-endemic areas.

View Article and Find Full Text PDF

Fleas (Insecta, Siphonaptera) are important vectors of plague and murine typhus in many parts of the world. Currently, about 2700 flea species were described in the world. The most common vector flea Xenopsylla cheopis is found throughout India, but X.

View Article and Find Full Text PDF

The diseases transmitted by Aedes mosquitoes, such as dengue, chikungunya, yellow fever, and Zika, are ever-increasing. Rapid and unplanned urbanization adversely impacts various endemic species such as ants and facilitates the breeding of Aedes mosquitoes. We have observed the predatory potential of ants over Aedes eggs in urban breeding habitats, and their impact on Aedes mosquito breeding was determined by a field experiment that mimicked the natural breeding habitats.

View Article and Find Full Text PDF

Background & Objectives: Dengue emerged as an important public health problem in Tamil Nadu from 2000 onwards, reported in all the districts as an endemic disease of Tamil Nadu except Nilgiris district. So this study was carried out to understand the dengue epidemiology in Nilgiris district.

Methods: Block-wise study was made at the Nilgiris district.

View Article and Find Full Text PDF

Japanese encephalitis virus is the major cause of encephalitis in India. To control the increasing incidence and fatal outbreaks, SA 14-14-2 vaccine was introduced initially in 104 endemic districts in phased manner from 2006 to 2011. As there is no data available before 2008 on the number of Japanese encephalitis (JE) cases excluding cases of Acute Encephalitis Syndrome (AES), a four year average of the number of JE vs.

View Article and Find Full Text PDF

The vector mosquitoes of dengue and chikungunya fever, Aedes aegypti and Aedes albopictus have adapted to feed on humans and undergo larval and pupal development in natural and artificial freshwater collections. Although several studies reported, still, much information is required to understand the successful survival of Aedes mosquitoes in small temporary containers. In an investigation conducted in the chikungunya affected areas of Kerala state, India, the presence of Bdelloid rotifer, Philodina in 95% of breeding habitats of Ae.

View Article and Find Full Text PDF