There is much we know and much we don’t know about how and why the HIV virus spreads. Yet information on the exact modes of transmission and how to combat them is critical to containing the AIDS epidemic

Scant attention is paid to occupational health safety for nurses in Indian hospitals in the context of blood-borne infections. Yet studies of health care workers exposed to HIV-infected blood through percutanous injury estimate a transmission rate of 0.3% per injury, says Shreedevi Balachandran