Sentences with phrase «influenza vaccine effectiveness»

Not exact matches

The flu vaccine is showing higher effectiveness for H1N1 and influenza B strains (67 and 42 % respectively for all age groups).

Findings from this study of flu vaccines delivered by a small needle intradermally parallel earlier results that found adding a strain of influenza B could improve the effectiveness of a flu vaccine nasal spray and a traditional intramuscular vaccine that is injected as a shot in the arm muscle.

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

The researchers found 38 studies published between June 2011 and April 2016 that measured the effectiveness of the inactivated pandemic influenza vaccines, covering a population of more than 7.6 m people.

«New influenza vaccines could, for the first time, maintain their effectiveness in the face of viral evolution,» Subramanian says.

For some researchers the big goal is to bump up the effectiveness of existing vaccines, most of them made from chemically - killed influenza particles or proteins extracted from such particles (see «Anatomy of a killer virus»).

Recent federal recommendations against offering the inhaled nasal influenza vaccine due to lack of effectiveness could lead to more flu illness in the U.S. if the inhaled vaccine becomes effective again or if not having the choice of the needle-less vaccine substantially reduces immunization rates, according to a new analysis led by University of Pittsburgh School of Medicine scientists.