PubMed · 11130321
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D A Enarson, A el Sony, D S Bam. 2000. Response from IUATLD.. https://doi.org/10.1177/00369330000450s128
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BACKGROUND: Females given high-titre measles vaccine (HTMV) have high mortality; diphtheria-tetanus-pertussis (DTP) vaccination might be associated with increased female mortality. We aimed to assess whether DTP or inactivated poliovirus (IPV) administered after HTMV was associated with increased female-male mortality ratio. METHODS: In three trials from West Africa, 2000 children were randomised to HTMV or control vaccine at 4-5 months of age; a second vaccination was given at age 9-10 months (standard measles vaccine). Children in high-titre groups were given IPV or DTP-IPV. Another 944 children received HTMV as routine vaccination in Senegal. FINDINGS: When we compared high-titre and control groups, no difference in mortality between the first and the second vaccination was noted. After the second vaccination, the female-male mortality ratio was 1.84 (95% CI 1.19-2.84) in children in the high-titre groups who received DTP-IPV or IPV, and 0.59 (0.34-1.04) in controls who received standard measles vaccine (p=0.007). Children who received HTMV but no additional DTP-IPV or IPV had a female-male mortality ratio of 0.83 (0.41-1.67). This ratio was 2.22 (1.04-4.71) for children who received DTP-IPV after routine HTMV and 1.00 (0.68-1.47) for those who did not. When we combined the results from all trials, the female-male mortality ratio was 1.93 (1.33-2.81) for those who received DTP or IPV after HTMV, and 0.96 (0.69-1.34) for those who did not (p=0.006). INTERPRETATION: A change in sequence of vaccinations, rather than HTMV itself, may have been the cause of increased female mortality in these trials.
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