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Biotech / Medical : SARS and Avian Flu
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To: RealMuLan who wrote (282)4/22/2003 9:15:08 PM
From: Biomaven  Read Replies (2) of 4232
 
Yiwu,

Thanks for the link.

This is interesting:

Four other code sequences have been released by scientists in Canada, the US, Hong Kong and Singapore. All differ by up to 15 "letters" in the 30,000 that comprise the virus. The Chinese scientists note the differences and write that "the virus is expected to mutate very fast and easily". Such slight differences could also be explained by errors in the sequencing process.

However, most of the variations seen so far seem to affect one gene in particular, while 12 more genes show no changes between non-Chinese sequences. This suggests the variants may genuine mutations.

Certainly you would expect mutations in a coronavirus because it is an RNA virus that doesn't have the "error-checking" that some other viruses have. Thus there are a lot of mutant HIV strains out there, whereas I don't think there are that many measles strains.

Peter
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