Diferenças clínicas observadas em pacientes com dengue causadas por diferentes sorotipos na epidemia de 2001/2002, ocorrida no município do Rio de Janeiro Clinical differences observed in patients with dengue caused by different serotypes in the epidemic of 2001/2002, occurred in Rio de Janeiro

ABSTRACT The authors evaluated clinical and epidemiological differences among the serotypes of dengue in Rio de Janeiro’s 2001-2002 outbreak of the disease. Out of 362 cases that had viral isolation samples, notified by the Information System forNotification Diseases (SINAN), from January/2001 to June/2002, 62 were caused by serotype 1,62 by serotype 2 and 238by serotype 3. In comparison with serotype 2, an individual infected by serotype 3 had a 6.07 times higher chance(OR = 6.07; CI: 1.10-43.97) of presenting shock and a 3.55 times higher chance (OR = 3.55; CI: 1.28-9.97) of developingexanthema. When compared to serotype 1, serotype 3 had a 3.06 times higher chance (OR = 3.06; CI: 0.99-9.66) ofcausing abdominal pain and a 3.61 times higher chance of exanthema (OR = 3.61; CI: 1.16-11.51). It was found thatindividuals infected by serotype 3 of the virus presented signs indicating a more severe disease. Key-words: Dengue. Epidemiology. Signs and simptoms. Epidemiologic surveillance. 1.Departamento de Medicina Preventiva da Faculdade de Medicina da Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ. 2. Nucleo de Estudos de SaudeColetiva da Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ.