30/03/21 17:00 PM IST
What are Culex mosquitoes ?
Why is there a need to worry?
When mercury level start soaring in Delhi ?
The mercury level started soaring in Delhi from mid-March, Culex or house mosquitoes swarmed back in large numbers causing much inconvenience to Delhiites. Resident welfare associations have expressed their concern to the municipal corporation coercing them to call for or a high-level meeting to dig deep into the matter and find out measures to control their growth. From using mosquito larvicidal oil to house-inspections, the Delhi Municipality Corporations are picking on all kinds of necessary means to curb their menace. Even with MCD officials are continuously inspecting households with open defecation and providing favourable weather conditions, the number of mosquitoes has seen a sharp rise in the past few weeks. The workers are monitoring houses, doing tax survey and encouraging people in unauthorised colonies to register their houses. However, sources said 1,000 works have been diverted from their inspection duties and house visits gave declined from 44 lakh in 2018 to 21 lakh this year till March second week. The numbers dipped massively in 2020 due to the pandemic as workers were utilized to perform Covid-related duties.
On a usual day, near to 3,500 workers visit 60 to 70 Delhi homes to inspect coolers, tanks surrounding to find they have stagnant water or other favourable breeding ground in their surroundings.
Where mosquitoes are most active in daytime?
Most types of mosquitoes are active around dusk and dawn, so avoiding the outdoors at those times will reduce the likelihood of getting a bite. If you're outside, wear long sleeves, long pants and insect repellent to protect skin from mosquitoes. A small fan at outdoor gatherings may also reduce mosquitoes, as they are not strong flyers. It is especially important to wear effective insect repellents and protective clothing if traveling outside.
Who gave evidence that mosquito cannot spread corona virus?
Scientists from Kansas State University have provided evidence that mosquitoes indeed cannot. The researchers have demonstrated in lab experiments that SARS-CoV-2 cannot infect mosquitoes. It is the first such confirmation. “We did everything possible to get the mosquitoes infected even though the conditions that we used would not be found in nature. The mosquitoes did not get infected even in these extreme conditions. The experiments were conducted on three common and widely distributed species of mosquitoes. Aedes aegypti, Aedes albopictus and Culex quinquefasciatus. The first two species are the vectors for dengue fever, chikungunya, Zika fever, and yellow fever. Culex quinquefasciatus spreads viruses that cause lymphatic filariasis and certain kinds of encephalitis.
All three species are present in India. The coronavirus was unable to replicate in any of them.
How are they harmful?
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