The flu season has had severe cases caused predominantly by type A flu strains, like H3N2.
Next: Too many strains to cover in one vaccine.
"By looking closely at the available data and applying the lessons we learn each flu season to the vaccine development process, we offer the greatest chance of developing vaccines that even more effectively prevent the flu in the future", Gottlieb said in a statement.
Flu season will be a little easier next year for people who hate needles. "The antibodies that you get out of it are now a response against a slightly different virus, which reduces the effectiveness". We're taking steps to investigate each of these potential causes, rule out possible reasons for the variation in effectiveness and improve vaccine efficacy against H3N2. Centers for Disease Control data shows a recent decline in doctors visits to report flu-like symptoms, but the agency stopped short of confirming if the number of cases had peaked yet.
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Research indicates that the droplets from a sneeze can travel more than 20 feet and may remain suspended in the air for as long as 10 minutes, so the flu virus can easily infect the air inside a classroom long enough to make kids and adults sick from just a few coughs or sneezes. By comparison it is 42 percent effective against influenza Type B viruses in Europe. "The vaccine is never flawless, but is does appear to still have some protectiveness to it". It was 0 percent effective against one major flu strain during the 2016-2017 flu season.
A record number of Coloradans have been hospitalized for the flu this year, and metro-area health officials are urging residents to get the vaccine for the contagious illness if they haven't already done so.
Deaths caused by pneumonia and influenza fell to 9.5 percent of all fatalities across the country during the week ended February 3, according to the Centers for Disease Control and Prevention's most recent data. We would particularly like to understand why vaccine effectiveness against H3N2 influenza year-to-year tends to be lower than effectiveness against other influenza viruses.
About half of the children who have died were otherwise healthy, and most weren't fully vaccinated, according to CDC data. The adjuvanted influenza vaccine contains an ingredient meant to boost the immune system's response to the vaccine while high dose vaccines contain four times as much of the influenza material or antigen as standard vaccines. "It's all still occurring throughout the state, but overall, we're seeing a leveling off", she says.