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Risk factors
By Mayo Clinic staffNaegleria infection is rare. You're likely at some — although low — risk of naegleria infection anytime you swim or participate in water sports in freshwater lakes, rivers and hot springs. This is particularly true in higher risk areas such as the southern United States. You may also be at greater risk during warm and dry summer months. This is especially true during years when there are heat waves. Improperly chlorinated or poorly maintained swimming pools also may put you at risk.
