Volume 28, Number 10—October 2022
Rickettsial Infections Causing Acute Febrile Illness in Urban Slums, Brazil
|Patient no.||Age, y/sex||Symptoms||Duration of illness, d†||Antigen (group)||IFA titers
|Acute phase‡||Convalescent phase§|
|1||10/F||Fever, headache, myalgia||6||R. rickettsii (SFGR)||0||256|
|2||21/F||Fever, headache, myalgia||1||R. rickettsii (SFGR)||0||256|
|3||42/F||Fever, headache, myalgia, lethargy, diarrhea||3||R. rickettsii (SFGR)||0||256|
|4||6/M||Fever, headache, myalgia, lethargy, vomiting, diarrhea||10||R. rickettsii (SFGR)||0||128|
|5||8/F||Fever, headache, myalgia, fatigue, vomiting, diarrhea||6||R. rickettsii (SFGR)||0||256|
|6||12/M||Fever, headache||1||R. rickettsii (SFGR)||128||512|
|7||6/F||Fever, lethargy, diarrhea||5||R. typhi (TGR)||0||256|
*Rickettsia rickettsii Sheila Smith strain was used to determine SFGR IgG reactivity and R. typhi Wilmington strain was used to determine TGR IgG reactivity. IFA, immunofluorescence assay; SFGR, spotted fever group rickettsiae; TGR, typhus group rickettsiae. †Number of days of illness before attending urgent care facility in Salvador, Brazil. ‡Acute-phase serum samples were obtained at the time of enrollment when the patient arrived initially at the urgent care facility. §Convalescent-phase serum samples were obtained >15 d after enrollment in the study.
1These authors contributed equally to this article.