Symptoms of the 2009 pandemic influenza A(H1N1) virus in humans are usually similar to regular human seasonal influenza symptoms, involving fever of sudden onset and respiratory symptoms; diarrhoea might also occur.
Simptomi okužbe z virusom pandemske gripe A(H1N1) 2009 pri ljudeh so običajno podobni simptomom okužbe z navadno sezonsko gripo ter vključujejo nenadno povišanje telesne temperature in težave z dihanjem, pojavi pa se lahko tudi driska.