Gram-negative meningitis is a form of meningitis. The term gram-negative refers to a way of differentiating bacteria. This type of bacteria is typically resistant to drugs and most available ...

Only a fraction of the presumed cases in five countries have led to positive tests for anthrax. Some scientists say other causes cannot yet be ruled out. By Apoorva Mandavilli Apoorva Mandavilli ...

The State Department said yesterday that a letter mailed in Pakistan to the U.S. consulate in Lahore had tested negative for anthrax bacteria. U.S. officials had said Tuesday that preliminary testing ...