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Bisset Lazcano, J. A.,
M. C. Marquetti, et al. (1985). "[Abundance of
larvae of urban mosquitoes during the campaign of the
eradication of Aedes aegypti (Linnaeus, 1762) and of
dengue in Cuba (1981-82)] La abundancia larval de mosquitos
urbanos durante la campana de erradicacion del Aedes
aegypti (Linnaeus, 1762) y del dengue en Cuba (1981-82)."
Rev.Cubana.Med.Trop. 37: 161-168.
Biswas, D., S. Dey, et al. (1993).
"Observations on the Breeding Habitats of Aedes-Aegypti
in Calcutta Following an Episode of Dengue Haemorrhagic
Fever." Indian J.Med.Res-A. 9744-46: -46.
A year-long (Nov. 1990-Oct.1991) search for Ae. aegypti
larvae was made of all water containers in and around
fixed 100 houses at Bowbazar area in Calcutta following
an episode of DHF. Out of 10151 containers searched,
615 (6%) were positive. Masonry tanks were the major
(64.2%) and preferred (17%) breeding sites of Ae. aegypti.
Indoor containers (6.7%) were more conductive to breeding
of the vector species than the outdoor ones (3%). Breteau
index showing wide variation (25 in December '90 to
'93 in August 1991) proved to be the best for measurement
of density of larval population of Ae. aegypti and paralleled
the fluctuation in both rainfall and humidity. Role
of temperature was not pronounced. It was noted that
cases of DHF occurred even with the lowest Breteau index
in December
Blackburn, N. K., G. Meenehan, et
al. (1987). "The status of dengue fever virus in
South Africa--serological studies and diagnosis of a
case of dengue fever." Trans.R.Soc.Trop.Med.Hyg.
81: 690-692.
To assess the possibility of a dengue epidemic occurring
in South Africa 3 groups of survey sera and 2 groups
of patients' sera, from a dengue high risk area of South
Africa, were tested for antibodies to several flaviviruses.
3.8% (75/1951) of the survey sera and 9.2% (26/282)
of the patients' sera had haemagglutination inhibition
antibodies to one or more of the flaviviruses tested.
One of 1951 survey sera had a spectrum of complement
fixation antibody consistent with a primary dengue infection,
and 5 of 282 patients' sera also had complement fixation
antibodies to flavivirus antigens. These 5 positive
patients had recently travelled to India but in only
one was there an antibody spectrum unequivocably consistent
with a primary dengue infection. Dengue virus type 1
was successfully isolated from this patient's acute
serum. The susceptibility of the population to dengue
virus infection, the presence of the main vector of
dengue virus and the occurrence of imported cases of
dengue fever emphasize the need for continuous vigilance.
Blackburn, N. K. and R. Rawat (1987).
"Dengue fever imported from India. A report of
3 cases." S.Afr.Med.J. 71: 386-387.
After visiting Saudi Arabia and India a woman became
ill within 1 week of her return to Durban. Dengue type
1 virus was isolated from acute-phase serum, and antibody
seroconversion was demonstrated. This is the first case
of dengue fever in the RSA since the 1926-1927 epidemic.
The occurrence of this case, and 2 further suspected
cases, emphasises the need for vigilance if another
epidemic is to be avoided.
 
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