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Coexistence of antibodies to tick-borne agents of babesiosis and Lyme borreliosis in patients from Cotia county, State of São Paulo, Brazil.


This paper reports a case of coinfection caused by pathogens of
Lyme disease and babesiosis in brothers. This was the first case of borreliosis in Brazil, acquired in Cotia County, State of S o Paulo, Brazil. Both children had tick bite history, presented erythema migrans, fever, arthralgia, mialgia, and developed positive serology (ELISA and Western-blotting) directed to Borrelia burgdorferi G 39/40 and Babesia bovis antigens, mainly of IgM class antibodies, suggestive of acute
disease. Also, high frequencies of antibodies to B. bovis was observed in a group of 59 Brazilian patients with
Lyme borreliosis (25.4%), when compared with that obtained in a normal control group (10.2%) (chi-square = 5.6; p < 0.05). Interestingly, both children presented the highest titers for IgM antibodies directed to both infective diseases, among all patients with
Lyme borreliosis.

Mem Inst Oswaldo Cruz. 2003 Apr;98(3):311-8. Epub 2003 Jul 18. Case Reports [1]