Sentences with phrase «when circulating strains»

Anti-flu peptides could become handy when vaccines are unavailable, in the case of a new pandemic strain, or when circulating strains become resistant to current drugs, says senior author Joshy Jacob, PhD, associate professor of microbiology and immunology at Emory Vaccine Center and Emory University School of Medicine.

Not exact matches

«Even when the vaccine is not a perfect match to the circulating influenza strain, as is the case this year, the vaccine still helps prevent more severe infections if children get sick with the flu,» she says.

However, even in previous years when the vaccine has been well - matched to circulating influenza strains, effectiveness has been low (40 to 60 percent).

It is well - established that influenza vaccines are less effective in «mismatched» seasons when the main circulating strains change after the months - long vaccine production process has already begun.

So H1N1 in itself is a, you know, broad category of viruses that circulate in humans, even now; they are not as fearsome as the original strain when it first emerged.

These rare VDPVs arise when a virus used in the live vaccine reverts from its weakened form and regains its virulence — a danger when vaccination rates are low, as they are in both places, allowing the vaccine strain to circulate and accumulate genetic mutations.