Aimee Simone, Editorial Intern

A new study finds that the effectiveness of the pertussis vaccine wanes in the 5 years after children receive their last dose, which may help explain recent outbreaks.

Customer satisfaction with mail-order pharmacies declined again in an annual study by J.D. Power and Associates.

A recent study finds pre-diluted gray tattoo ink to be the cause of a Mycobacterium chelonae skin infection outbreak in Rochester, New York.