The mortality rate of<unk>  is slightly less than 1 in 1000. Those over the age of 65, neonates, and those with underlying chronic medical problems are most likely to have severe complications. Neonates are vulnerable as it is possible to vertically transmit<unk>  from mother to infant during delivery, which results in high rates of morbidity, as infants lack fully developed immune systems. The likelihood of prolonged symptoms or chronic joint pain is increased with increased age and prior rheumatological disease.
Chikungunya
Zika fever
Yellow fever
Dengue fever
Trench fever
Rocky Mountain spotted fever
Cuban fever
Blackwater fever