Sentences with phrase «previously circulating strains»
Since December, an outbreak of swine flu in India has killed more than 1,200 people, and a new MIT study suggests that the strain has acquired mutations that make it more dangerous than previously circulating strains of H1N1 influenza.
https://www.sciencedaily.com/ Not exact matches
Both drift and shift make these proteins unrecognizable to the antibodies present in people that were previously inoculated against the flu virus, which now circulates as more than 90 strains.
The authors confirm that the new strain is comprised of segments from swine flu strains known to circulate in Europe, Asia and North America, but that this combination has not previously been seen and appears to have been evolving independently from its parent strains for some time.