Malaria Vectors, Epidemiology, and the Re-Emergence ofAnopheles darlingiin Belém, Pará, Brazil
| Autor: | Jane C. O. F. Amaral, Ana N. M. D. A. Silva, Raimundo Tadeu Lessa de Souza, Edvaldo Santa Rosa, M. Nazaré O. Segura, Deocleciano Galiza, Jan E. Conn, Carla Christiani Bastos dos Santos, Carl D. Schlichting, Raimundo Nonato da Luz Lacerda, Marinete Marins Póvoa, Robert A. Wirtz |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
medicine.medical_specialty
Population Biology Anopheles parasitic diseases Epidemiology medicine Animals Humans education Population Density education.field_of_study Geography General Veterinary Anopheles darlingi Ecology Incidence Population size Incidence (epidemiology) Outbreak medicine.disease Insect Vectors Malaria Infectious Diseases Insect Science Vector (epidemiology) Regression Analysis Parasitology Brazil Demography |
| Zdroj: | Journal of Medical Entomology. 40:379-386 |
| ISSN: | 1938-2928 0022-2585 |
| Popis: | An evaluation of malaria transmission and epidemiology in the Amazonian city of Belém over the last 70 years shows that (1) Anopheles darlingi, reported to be eradicated in 1968, reappeared in the mid 1990s, with a marked increase in abundance between 1997 to 1999 in two of three districts sampled; (2) An. darlingi and An. aquasalis are each implicated in current malaria transmission in different districts of the city; (3) mosquito species diversity (in Anopheles subgenus Nyssorhynchus) has increased from two in the 1930s to six in the 1940s to 10 in the 1990s; (4) there is no overall correlation between malaria case incidence and human population size from 1940 to 1996 in Belém; (5) however, the total number of malaria cases has increased significantly since the late 1970s and over the short term from 1993 to 1999; and (6) interestingly, the short term increases are due solely to cases of Plasmodium vivax infection; cases of P. falciparum malaria are declining (significantly for Pará state only). The reappearance of An. darlingi may be a result of the continued expansion of Belém into the surrounding forest in the 1990s. In the absence of preventative measures, we predict an increase in local outbreaks of malaria in the DAENT and DAICO districts where the population sizes of An. darlingi are increasing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|