CDC data shows 9% vaccine effectiveness for influenza A, virus H3N2 flu shot last year

02C7D092-DFBF-4EA6-8A32-30603382C896

While governments, international bodies and the public health community scramble to arrest the COVID-19 virus, now a pandemic, and with states of emergency declared nationwide and in Massachusetts, medical experts are still trying to come up with vaccines that can do a better job against various strains of influenza that have sickened and killed people for many decades.

The experts say the effectiveness rate of flu shots should be at least 90% successful.

But data collected for nearly two decades by the US Center for Disease Control and Prevention show effectiveness rates often hovers between 40 and 50%.

Data from the 2018-2019 flu season, the most recent set of complete information, first published in June, indicated that a flu shot to prevent influenza A, the H3N2 strain, was only 9% effective in preventing onset of the flu, among all age groups.

Continue reading… “CDC data shows 9% vaccine effectiveness for influenza A, virus H3N2 flu shot last year”

0