Two new Pediatrics studies are out this week teaching us more about the effectiveness of the whooping cough vaccine. Lots to learn about how we protect babies and reminders here why we’re immunizing moms during EVERY pregnancy:
- First, the good news: traditionally we have been trained to tell parents that the first shots we give during infancy aren’t fully protective for infants but rather the beginning of creating immunity against the diseases they prevent. However, a study conducted by researchers at the CDC looked back at cases of infants with pertussis from 1991-2008 and they found evidence that babies who received their whooping cough shot as early as they could, at the age of 6 weeks, were less likely to be hospitalized and/or die from the infection. Wonderful news! The first evidence out there that even that first shot, when given as early as possible, helps protect very young infants who are most at risk from whooping cough. New parents can increase protection, even during outbreaks like we’re having right now, by getting their babies immunized on-time and as early as possible.
- The not so good (but important) news: the effectiveness of the Tdap shot given to young teens (explained more below) doesn’t always provide long-lasting protection and wanes significantly in the years after the 11-year-old booster dose is given. New research out found after 1 year, about 70% of teens are still protected from the booster, but by 4 years after the shot only about a 1/3 of them are. More: