-
1In the second such recall this season, manufacturer MedImmune says the vaccine has lost potency since it was made. ‘This is not a safety issue,’ a U.S. official says.
-
2A study in California shows that about a quarter of the people hospitalized for H1N1 complications were morbidly obese, even though less than 5% of the population falls into that category.
-
3Humans have it. Pigs don’t.
-
4
Surgical masks help stop droplets from spreading, but respirators are designed to filter small particles. If used correctly, respirators are more likely to reduce flu risk, the CDC says.
