Officials generally are pleased if a flu vaccine is 40% to 60% effective.
The shots tend to do better when they are well matched against the circulating flu strains. Officials say that’s what’s happened during this — relatively typical — flu season.
...Nearly half of people ages 50 and older who were very concerned about the cost of surgery wound up not having an operation they had considered, researchers reported Tuesday in the journal JAMA Network Open.
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