ABSTRACT
Objective: To assess public knowledge, practices and perceptions on typhus fevers in Sri Lanka. Methods: A descriptive study was done in four selected typhus-prone areas in Southern Sri Lanka. A mixed-method was employed using face-to-face interviews and questionnaire-based surveys among confirmed cases of typhus and at-risk populations, respectively. Frequencies, percentages, and means were used to characterize socio-demography and evaluate disease awareness. Results: The lay terms for typhus fevers reported in the studied region were 'peacock fever', 'tick fever' and 'bird fever'. A total of 499 subjects participated [mean±SD, (45±16) years] in the questionnaire-based survey, and 13.6% (n=68) reported past experience of typhus fever, 1.2% (n=6) identified the disease as 'typhus' while 58.7% (n=293) and 11.8% (n=59) knew it as 'peacock fever' and 'tick fever', respectively. The etiological agent was unknown to 95.2% (n=475), but 53.5% ((n=267) were aware that it was vector-borne. Fever (57.3%, n=286), eschar (35.7%, n=178), headache (22.0%, n=267) and myalgia (19.2%, n=96) were identified as key symptoms. Past disease experience was significantly associated with higher awareness of the main disease symptoms (fever: χ 2 =15.713, P<0.001; headache: χ 2 =19.447, P<0.001; lymphadenopathy: Fisher's exact test, P=0.023; eschar: χ 2 =12.049, P<0.001). None knew of any disease prevention methods. Participants with a past history of typhus fever had sought treatment at state hospitals (55.9%, 38/68) and private sector hospitals (5.9%, 4/68). Conclusions: Public awareness on preventive practices for typhus fevers was rare among the participants though vector-borne aspect was known to many. Clinical disease awareness was deficient among those without past experience of typhus fever. Community sensitization on vector avoidance strategies is highly recommended.
ABSTRACT
In a tropical country like India, fevers are caused by different etiological agents. Rickettsial infections, which have a global distribution is one of the differential diagnosis in such cases and are reported from almost all parts of India. Rickettsial diseases widely vary in severity from self-limited mild illnesses to fulminating life-threatening infections. They are obligate intracellular gramnegative coccobacillary forms that multiply within eukaryotic cells which makes it difficult to culture them on artificial culture medium. With globalization there is rapid spread of disease across the continents and therefore, skills for diagnosis and management of the disease attains global importance. Rickettsial diseases can be clinically classified as Spotted Fever group, typhus group, distinctive clinical rickettsiae and emerging rickettsiae. The clinical course will have incubation period, stage non-specific clinical signs and symptoms followed by typical/classical features depending on the type of rickettsiae infecting a person. However the clinical manifestation varies from one geographical area to another area for same species. The rickettsial diseases once thought to have been eradicated from India are re-emerging in many parts of our country. Their presence has recently been documented in at least eleven states of our country. Greater clinical awareness, a higher index of suspicion, better use of available diagnostic tools would increase the frequency with which rickettsial diseases are diagnosed.