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Fungal infections are infections caused by a fungus, a type of microorganism. Two common causes of fungal infections are a fungus called tinea and yeast infections caused by the fungus Candida albicans. Some very common types of fungal infections caused by tinea include:Athleteâs foot.Jock itch.ungal infections are infections caused by a fungus, a type of microorganism. Two common causes of fungal infections are a fungus called tinea and yeast infections caused by the fungus Candida albicans. Some very common types of fungal infections caused by tinea include:
Fungal infections can also happen in people without weak immune systems. Fungal infections that are not life-threatening, such as skin, nail, or vaginal yeast infections, are common.Some infections can be more serious.nyone can get a fungal infection, even people who are otherwise healthy. Fungi are common in the environment, and people breathe in or come in contact with fungal spores every day without getting sick. However, in people with weak immune systems, these fungi are more likely to cause an infection.