Only One Shot

In this 2006 image, a qualified healthcare practitioner was in the process of administering an intramuscular immunization to a woman, using the woman’s right shoulder muscle as the injection site.

Say it together: “One shot to rule them all!” This is Sandra Tsing Loh with the Loh Down on Science. I got my flu shot LAST year — why do I need another one?? Because the flu virus resembles a spiky seed pod! Your immune system recognizes those spikes to

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