Fusarium sp. causes a broad spectrum of infections in humans including superficial infections, such as keratitis and onychomycosis, as well as locally invasive and disseminated infections. Invasive and disseminated infections occur almost exclusively in severely immunocompromised patients. Fusarium sp. may also causes sinusitis in immunocompetent individuals, and mycotoxicosis following ingestion of food contaminated by toxin-producing Fusarium. Fusarium sp. occasionally causes infection in animals and is important plant pathogens that cause various diseases on cereal grains.