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New flu virus in India likely from Australia

tetano

Editor, Senior Moderator
MUMBAI: A virus that is new to the Indian shores could just be contributing to the current flu epidemic sweeping across the state, especially Pune, say doctors.

While the swine flu-causing H1N1 virus is also an import from Mexico, the new virus that has got National Institute of Virology doctors scrambling for data, is considered to be Australian in origin.

Called the Australian Ross River virus, it is similar to the dengue and chikungunya-causing viruses. Like chikungunya (CHIK-V), it, too, causes arthritis-like pain in the joints.

However, the talk of the Australian virus has incensed state health officials, some of whom feel it could be a covert operation to sell expensive diagnostic kits. "This year, we are seeing a lot of variation in viruses and their manifestations, be it dengue or chikunguya. What is being touted as the Ross River virus could just be a new variant of CHIK-V," said a senior doctor from the health department.

On Saturday, health minister Suresh Shetty told TOI that four samples from patients admitted to Sassoon Hospital in Pune had been sent to NIV to test for the Ross River virus.

"We have got one sample's result as CHIK-V, and are awaiting results for the other samples," he said, adding that NIV director Dr A C Misra was confident that the other samples too would be negative for the Australian virus.

However, a senior health officer who wanted to be anonymous said that NIV had isolated the virus in eight samples.


Read more: New flu virus in India likely from Australia - India - The Times of India http://timesofindia.indiatimes.com/...stralia/articleshow/6494225.cms#ixzz0ydQ0Jqxz
 
Re: New flu virus in India likely from Australia

Ross River Virus has nothing to do with human or animal influenza viruses.

According to the International Committee on Taxonomy of the Viruses (ICTV) (http://www.ictvdb.org/ICTVdB/00.073.0.01.021.00.001.htm ), Ross River Virus belongs to Alphavirus genus, family Togaviridae.

It has a single positive-sense RNA segment, and it has an enzootic cycle with transmission to vertebrate hosts via arthropod.

Chikungunya is another member of the Alphavirus Genus, Togaviridae family but it is a distinct species.

Influenza virus aren't related to these viruses so the rather confused article above makes difficult to establish what is the actual causative agent(s) involved in the viral fever outbreaks described.
 
Re: New flu virus in India likely from Australia

It seems the original post is using the word "flu" to mean acute febrile illness. The "flu" that is suspected is Ross River fever. You're right; this has nothing to do with influenza.

There was a previous outbreak in India in which Ross River virus was suspected, but the illness turned out to be chikungunya. It appears the two viruses are closely related enough to produce false positives on each other's tests. It remains to be seen whether that is the case again this time.
 
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