<unk><unk>  is more prevalent in the elderly and in males. It has been a notifiable disease in the US since 1999.<unk><unk>  is underreported, thus scientists cannot reliably assess its incidence.
Q fever epidemiology and demographics
Listeriosis epidemiology and demographics
Relapsing fever epidemiology and demographics
Scarlet fever epidemiology and demographics
Diphtheria epidemiology and demographics
Brucellosis epidemiology and demographics
Sepsis epidemiology and demographics
Rheumatic fever epidemiology and demographics