New combined tetanus-diptheria-acellular pertussis vaccines for adults: primary care physician attitudes and preferences.

Availability of combined tetanus-diphtheria-acellular pertussis (Tdap) vaccines for adults offers a new pertussis prevention strategy for the US. Successful uptake of Tdap vaccine will depend partly on the attitudes and practices of primary care physicians, including their experience with Td boosters. We conducted a mail survey in August 2005 of a national random sample of 399 family physicians (FPs) and 399 general internists (IMs) to assess practices related to Td boosters, clinical experience with pertussis, and attitudes toward a potential Tdap vaccine recommendation for adults. The response rate was 49% (52% FPs, 46% IMs). Among 336 eligible respondents, half reported having clinical experience with pertussis. Most (81%) would recommend Tdap vaccine for their adult patients, and 73% support targeting adults likely to come in close contact with infants. Attitudes toward a potential Tdap vaccine recommendation differed by whether providers stock and administer Td boosters. We conclude that adult primary care providers in the US are likely to recommend Tdap vaccine to their adult patients, in concordance with recent national recommendations. Future research should assess the extent to which barriers impede adoption of Tdap vaccine recommendations.