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We describe a new method for active post-marketing surveillance of vaccine safety based on patient records. We studied the association between diphtheria/tetanus/pertussis (DTP) vaccination and febrile convulsion, and between measles/mumps/rubella (MMR) vaccination and febrile convulsion and idiopathic thrombocytopenic purpura (ITP) in five district health(More)
One hundred patients with suspected cerebrovascular disease were studied, using Doppler imaging techniques (Dop-Scan), as described by Spencer in 1974. Using a continuous wave Doppler probe, derived images of the carotid vessels and their tributaries were constructed. Twenty-nine of these patients had angiographic studies. A close correlation between(More)
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