From the TimesOnline:
A MUSLIM doctors’ leader has provoked an outcry by urging British Muslims not to vaccinate their children against diseases such as measles, mumps and rubella because it is “un-Islamic”.
Dr Abdul Majid Katme, head of the Islamic Medical Association, is telling Muslims that almost all vaccines contain products derived from animal and human tissue, which make them “haram”, or unlawful for Muslims to take.
Islam permits only the consumption of halal products, where the animal has had its throat cut and bled to death while Godâ€™s name is invoked.
Islam also forbids the eating of any pig meat, which Katme says is another reason why vaccines should be avoided, as some contain or have been made using pork-based gelatine.