Measles virus wipes immunity to other pathogens

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Two new studies have clarified that an infection with the measles virus tends toward depleting the body of B-cells – those are the cells that produce antibodies against infections that the body has previously encountered. As a result, around half of the “immune memory” is eliminated, so that, after measles, the body is again vulnerable to infection by many of the pathogens that it had previously built resistance against.

The measles vaccine does not, of course, have that effect.