BACKGROUND AND OBJECTIVE An increased risk of febrile seizure (FS) was identified with concomitant administration of trivalent inactivated influenza vaccine (IIV3) and pneumococcal conjugate vaccine (PCV) 13-valent during the 2010-2011 influenza season. Our objective was to determine whether concomitant administration of IIV3 with other vaccines affects the FS risk. METHODS We examined the ri...

Since 1966, the Advisory Committee on Immunization Practices (ACIP) has recommended tetanus-diphtheria toxoid (Td) be used instead of single antigen tetanus toxoid (TT) because, while both vaccines protect against tetanus, only Td protects against diphtheria. Despite this recommendation, approximately 2.5 million doses of TT were distributed annually from 1991 to 1997. One possible explanation ...

n engl j med 367;9 nejm.org august 30, 2012 785 in 50 years. Why has this theoretically vaccine-preventable disease been on the upswing? The past 45 years have seen concern about the safety of the diphtheria–tetanus–pertussis (DTP) vaccine, epidemics stemming from the vaccine’s decreased use, and the development of new vaccines using acellular pertussis components (DTaP). In the prevaccine era,...

AIM We studied the effect on neurodevelopment of infants who are exposed to thimerosal in tetanus-diphtheria (Td) vaccines during pregnancy. METHODS We compared Gesell Developmental Schedules (GDS) of exclusive breastfed infants at 6 months born to mothers who received Td (1 to 3 doses) against those who were born to mothers who did not take such vaccines. RESULTS Compared with the group of...

Prophylactic immunisation against infectious disease has been the most successful medical intervention yet in reducing mortality. From the introduction of vaccination against smallpox at the end of the eighteenth century, there has been continuous progress in producing safe and effective vaccines against a number of common diseases. These vaccines were bacterial toxoids (diphtheria and tetanus)...

Side effects have always been reported but in the latest years it seems that they have increased in number and seriousness, particularly in children as the American Academy of pediatrics reports [1,2]. For instance, the diphtheria-tetanus-pertussis (DTaP) vaccine was linked to cases of sudden infant death syndrome (SIDS) [3]; measles-mumps-rubella vaccine with autism [4,5]; multiple immunizatio...

O ver the course of human history, innumerable advances have been made to extend the length and quality of life. It would be difficult to debate the fact that vaccines have saved more lives than any other medical intervention in the past century. Sanitation, especially clean water, may have saved more lives than any other intervention, but sanitation has been mainly in the hands of engineers. P...

OBJECTIVE To evaluate the immunogenicity and safety of a diphtheria and tetanus toxoids, acellular pertussis, hepatitis B, and inactivated poliovirus-containing vaccine (DTaP-HepB-IPV) coadministered with pneumococcal 7-valent conjugate vaccine (PCV-7) and Haemophilus influenzae type b vaccine (Hib), with separate vaccines concurrently, or staggered (delayed) administration of PCV-7. STUDY DE...