The nasal flu vaccine, offered to children in many parts of the world, contains a live, weakened version of the virus
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The nasal flu vaccine that is often given to children causes a temporary rise in the number of pneumonia-causing bacteria in their noses, which they sometimes pass on to members of their household, a study has found. But this may not actually lead to more pneumonia cases among their relatives.
In fact, given that bacterial pneumonia in older people is often triggered by a bout of flu, vaccinating children…
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