<unk><unk>  usually develops in children, just like colds or the flu are common in children. This disease is most common in 3-15 year olds with males and females being equally affected. By the age of 10 years most children have acquired protective antibodies and<unk><unk>  at this age or older is rare.[dubious  – discuss]
Scarlet fever epidemiology and demographics
Typhoid fever epidemiology and demographics
Diphtheria epidemiology and demographics
Listeriosis epidemiology and demographics
Chickenpox epidemiology and demographics
Relapsing fever epidemiology and demographics
Lassa fever epidemiology and demographics
Rocky Mountain spotted fever epidemiology and demographics