"Fresh air can seriously damage your health". A most unlikely Government Health warning but, for the patient with Acquired Immunodeficiency Disease Syndrome, AIDS, air-borne infection presents a constant threat of pneumonia and death. Nearly all will die of diseases caused by microbes that are everywhere in the environment, and harmless to the normal, healthy individual. It could almost be said that air, water and food carry death to anyone infected with the Human Immunodeficiency Virus, HIV - the causative agent of AIDS. The World Health Organisation estimates that, by the end of the deca…
