Everybody knows that AIDS (Acquired Immune Deficiency Disease) is running rampant in Africa. An article in the February issue of Discover magazine (see page 12) suggests that sin is involved, but not necessarily the sin you thought. We are used to the idea that AIDS is transmitted through sexual contact and sharing contaminated needles amoung drug addicts. In the United States, that has indeed been the pattern. But the article suggests that in Africa, infected needles get shared when you least expect it - at the local health clinic. After all, if money is very scarce, why waste all those needles you could profitably use again? Evidence cited includes HIV positive vaccinated children whose parents do not have the disease and a decline in other sexually transmitted diseases even as HIV infection rates soar. Other ways needles are reused include blood transfusions and IV's. The article even relays the suggestion that if you are travelling in Africa, it might be best to carry your own syringe and "avoid all the health care you can".