To ensure successful transmission and establish chronic infection, parasites must evade the host's immune system and delay the development of immunity. Maria Yazdanbakhsh and David Sacks discuss ...

In immunology, stress is increasingly recognized as a potent modulator of immune function. Chronic stress—especially from war and prolonged conflict—affects ...

Pre-existing immunity against seasonal H1N1 flu might help explain why most reported human cases of H5N1 bird flu in the U.S. have not resulted in lethal outcomes, suggests a new study by University ...

From the award-winning opinion pages of The Wall Street Journal, the Journal Editorial Report sees columnists and members of the Journal Editorial Board debate the major economic, political and ...