US distribution of spotted fever rickettsiosis, of which<unk>  is a type, in 2014 There are between 500 and 2500 cases of<unk>  reported in the United States per year, and in only about 20% can the tick be found. Host factors associated with severe or fatal<unk>  include advanced age, male sex, African or Caribbean background, long-term excessive alcohol use and glucose-6-phosphate dehydrogenase (G6PD) deficiency. Deficiency of G6PD is a genetic condition affecting about 12 percent of the Afro-American male population. Deficiency in this enzyme is associated with a high proportion of severe cases of<unk> . This is a rare clinical complication that is often fatal within five days of the onset of the disease. In the early 1940s, outbreaks were described in the Mexican states of Sinaloa, Sonora, Durango, and Coahuila driven by dogs and Rhipicephalus sanguineus sensu lato, the brown dog tick. Over the ensuing 100 years case fatality rates were 30%–80%. In 2015, there was an abrupt rise in Sonora cases with 80 fatal cases. From 2003 to 2016, cases increased to 1394 with 247 deaths.
Rocky Mountain spotted fever
Zika fever
Flinders Island spotted fever
American tick bite fever
Trench fever
Chikungunya
Japanese spotted fever
Dengue fever