Pertussis Immunity Drops Soon After the Last Vaccine Dose Is Given.


The incidence of pertussis in children rises steadily in the years immediately following receipt of the fifth dose of the diphtheriatetanusacellular pertussis (DTaP) vaccine, according to a study in Pediatrics.

Researchers examined the incidence of pertussis among more than 400,000 children in Minnesota and Oregon who’d received all five doses of DTaP, with the fifth dose given between ages 4 and 6 years. In the 6 years after the last dose was received, some 550 pertussis cases were identified. The incidence rose steadily with each passing year.

The authors say their findings “strongly [suggest] waning of vaccine-induced immunity,” which “helps to explain the emergence of an increased burden of disease among 7- to 10-year-olds.” (Currently, the adolescent booster is recommended at ages 11 to 12 years.)

Source: Pediatrics

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.