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India
 Printable version  Dengue
fever has been reported from India
over a long time, but dengue haemorrhagic fever was
first reported in 1963 from Calcutta
city. Since then several outbreaks of dengue fever was reported from India with a major epidemic of dengue haemorrhagic fever that occurred in Delhi in 1996 when 10 252 cases and 423 deaths were
reported. Cases have been reported from the neighbouring
states of Haryana, Punjab,
Rajasthan, Utter Pradesh and two southern and western states. DEN-2 was
isolated during this epidemic and the proportion of DHF to DF was very high.
The number of DF/DHF cases and deaths reported since the epidemic has been low till
2002 but again has risen in 2003. In
2005, both the reported dengue cases and deaths show three fold increase as
compared to 2004. The case fatality has been above 1% for the last 10
years. However, the number of reported
dengue cases and deaths are mainly
from the capital city Delhi
and the other states that have small outbreaks go unreported. There for e the
case surveillance needs further strengthening .
There is need to step up case surveillance system.
Aedes aegypti
was reported from all the affected areas with house indices exceeding 20%.
Surveillance activities are carried out on a limited scale by the National
Institute of Virology, Pune and few other
institutions in the country. Since
1996, dengue control activities are coordinated and carried out by the
National Anti-Malaria Programme.
In 2006 the number of cases reported as compared to 2005 shows some
reduction whereas the Case fatality rate has remained above 1%.
During 2007(upto 19 June), 383
cases and 6 deaths have been reported from Kerala
(188 cases); Gujarat (93); Maharastra(15); Tamil Nadu(41);
Karnataka(27); Haryana(5); Delhi
(4); Rajasthan (4), Orissa (4), Chandigarh (1)
and Uttar Pradesh (1). Upto 31 may 2007 The cetral Cross Checking organization field Unit of NVBDCP
has checked 5083 houses , 6236v containers. The indices as compared to the
month of May 2006 were found higher.
The
trend data from India
shows that cases generally start to increase from august onwards, which is
post monsoon season. More importantly, it is clear from data that breeding of
Aedes mosquitoes however begins in June
itself. Such data may be taken into consideration , while planning in advance for dengue
prevention and control. Thus vector surveillance and control measures
supported by community mobilization for behavioural
change activites need to be taken before June and
sustained throughout the rainy season.
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