An alcohol-based mouthwash containing zinc salts had been used for decades by a patient. Vaccination or something similar to it is a very old medical practice: the Chinese and the Indians employed variolation centuries before Edward Jenner did with the bovine variety of the pathogen, and the practice was also in use in Africa, in Persia and in Turkey long before being spread in Europe and, much later, in America. The presence in many vaccines of debris composed of tungsten or tungsten carbide excited our curiosity since it is a hard metal which, at our knowledge, is not used during the preparation of a drug like a vaccine. Sudden Infant Death Syndrome (SIDS) is an acronym for sudden infant death syndrome, a condition referring to the unexpected death of children under the age of one year, often between the second and fourth months of life, which occurs during sleep.