Kolkata: Fresh figures of the dengue outbreak in West Bengal reveal that over 18,000 people have been affected by the vector-borne disease in the State in the year 2017. “From January 1 till today (October 20 ), 18,589 people have been diagnosed with Dengue. We have reports of 35 deaths, according to reports.
North 24 Paraganas district is the worst affected, Dr. Satpathy said..Certain public and private hospitals of the city are facing a huge rush of patients with high fever fearing that they are infected by the dengue virus. According to Dr. Sathpathi 17,652 people were diagnosed with dengue in the same period while the number of deaths were 35.
The unseasonal rain during Kali Puja and Diwali has led to fears of a spurt in dengue, with entemologists calling for renewed vigil by civic authorities to curb the menace.
The rain in the past few days has again raised the risk of dengue.If the water dries in four-five days, the eggs will not be able to complete the cycle. But if that doesn’t happen and fresh eggs are allowed to hatch, the dengue outbreak will continue till midto end-November. It is therefore critical that citizens and civic authorities become vigilant and clear out any stagnant fresh water source, particularly in small containers.
Female mosquitoes bite humans and use the nutrients in blood to produce their eggs.These eggs require at least seven days to transform into an adult mosquito after going through the larvae and pupae stages. Adult mosquitoes have a life of two-four weeks.
Since warmer temperature incubates the virus faster in the cold-blooded mosquito, the insect has more time to be infectious and alive to spread the disease. Warmer temperatures also make the mosquito hungrier, so it takes more blood meals and can spread the disease to more people. More Aedes aegypti increases the risk of chikungunya as well. Eggs hatched by a female mosquito carrying either the dengue or chikungunya virus will also be a carrier, but those female mosquitoes that aren’t born with the virus but bite a dengue or chikungunya patient also becomes a carrier.
Flight range studies suggest that most female Aedes aegypti spend their lifetime in or around the houses where they emerge as adults and that they usually fly an average of 400 metres. Hence, it is people, rather than mosquitoes, that rapidly move the virus from one place to another.