in the US, DPT vaccinations are usually administered at the ages of two months, four months and six months. Cot deaths cluster just after these times

US research has consistently showed an unusual temporal association between having a DPT jab and SIDS (cot death). One study of 70 randomly reported cot deaths found that 66% had been given a DPT jab just prior to death: 6.5% within 12 hours, 13% within 24 hours, 26% within 3 days and 37%, 61% and 70% within 1, 2, and 3 weeks respectively

The study also found that babies who had not been vaccinated with DPT tended to occur during the winter months, cot deaths of babies who had received the jab occurred all year round, clustered immediately after the vaccination

Recordings of babies breathing patterns before and after vaccination showed unstressed breathing during the six days before and periods of stressed breathing during the 12 days after. The pattern of stressed breathing days correlated with the pattern of cot deaths following vaccination in 41 babies measured by a separate study

when Japan raised the minimum age for DPT vaccinations to two years in 1974, cot death following a DPT vaccination disappeared in that country and Japan zoomed to the lowest infant mortality rate in the world.

the whooping cough element (the pertussis) in DPT is not the only dangerous element, as was originally thought. DT vaccinations have been found to cause similar numbers of deaths