Seasonal activity and hosts of the vectors of Crimean-Congo haemorrhagic fever in South Africa

Rechav, Y.

South African Medical Journal 69(6): 364-368

1986


ISSN/ISBN: 0256-9574
PMID: 3961619
Document Number: 279928
The seasonal activity and hosts of two species of Hyalomma, H. marginatum rufipes and H. truncatum, were studied in a Crimean-Congo haemorrhagic fever (CCHF) zone was conducted at the S.A. Lombard Nature Reverse, where a child had died from this disease. It was found that adults of the two species are very common during summer while the immature stages were active during winter and also demonstrated a second peak of activity in November. H. marginatum rufipes adults fed mainly on eland and zebra, while H. truncatum preferred black wildebeest, springbok and blesbok as hosts. Immature specimens of H. truncatum fed on hares and rodents and those of H. marginatum rufipes on hares rodents and guinea-fowl. It appears that the immature stages pick up the virus from hares and other small mammals, but it is the adult ticks who transfer the virus to man. The epidemiology of tick-borne CCHF is discussed.

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