Spatial and temporal transmission risk of Dirofilaria immitis in Argentina.
Int J Parasitol
; 36(14): 1463-72, 2006 Dec.
Article
em En
| MEDLINE
| ID: mdl-17027990
ABSTRACT
The aim of this work was to assess spatial and seasonal Dirofilaria immitis transmission risk throughout Argentina with models based on the temperature threshold below which filarial development will not proceed in the mosquito (i.e. 14 degrees C), the occurrence and the number of potential vector mosquito species, and the Heartworm Development Units derived from the degree-days concept. The four models showed a similar increasing southwest-northeast tendency and correlated significantly with canine prevalences used as external validation data. About one-third of Argentina would be suitable for heartworm transmission and the highest risk areas include the north-eastern provinces. According to our models, heartworm transmission is markedly seasonal with peaks in January and February; no region would support transmission throughout the year. To improve the present models, it is necessary to know which mosquito species are competent rather than potential vectors in the country. We believe the present study provides the first risk assessment maps for D. immitis transmission in the Southern Hemisphere and provides a useful guide for heartworm prevention during the transmission periods in different regions of Argentina.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dirofilaria immitis
/
Dirofilariose
/
Doenças do Cão
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
America do sul
/
Argentina
Idioma:
En
Revista:
Int J Parasitol
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Argentina