Ctg City Corporation’s mosquito eradication program has had little effect

Chattogram City Corporation failed to implement the recommendation to use effective insecticides for mosquito control even within a year, experts audited the corporation spending millions of dollars on ineffective mosquito nets.

Even the regular use of fog machines and spraying of insecticides did not give the expected results. As a result, during the first 10 months of the year, the number of patients affected by dengue exceeded one thousand.

The city corporation says that the drug recommended by the expert panel is not approved by any organization.

However, a letter was sent to the Pathology Department of the Department of Agricultural Extension recommending experiments on the drug. If approved, the herbal insecticide Moskuban will be used experimentally in hot spots of mosquito breeding.

According to the information provided by the District Civil Surgery office, in the first six months of this year, a total of 36 patients were infected with Dengue, a mosquito-borne disease, in Chattogram district. Later, 64 dengue patients were detected in July, 114 in August, and 601 in September. According to the epidemic report, 343 more people were identified in the first decade of October.

While there were 17 cases and 1 death in 2020, and 271 cases and 5 deaths in 2021, 1154 people have been infected and 11 people have died since January of this year.

Dr Mohammad Ilias Chowdhury, District Civil Surgeon, Chattogram, said, “Due to the rains in May, Aedes mosquitoes continue to breed, so the infection rate is increasing.”

He also said that “Dengue epidemic usually occurs from June to September. It starts decreasing from the first week of October. But this time it is on the contrary. More than 50 dengue epidemics have been detected every day for the past few days. This is from Biz city corporation. We have asked to take various measures to kill mosquitoes.”

According to the city corporation, it spends more than one million taka every year on buying machines and spraying drugs.

The city corporation sprays larvicides with spray machine to kill mosquito larvae and adulticides with fogging machine to kill adult or flying mosquitoes. The city corporation has spent Tk 1.05 million to buy mosquito nets in the financial year 2021-22. 6 million manats have been allocated in the current financial year. Recently, the city corporation has also completed the process of procuring 10,000 liters of adulterants and 2,000 liters of larvicides.

In 2021, M Rezaul Karim Chowdhury took the initiative to test the effectiveness of mosquito nets immediately after taking office as the mayor. Research conducted by expert lecturers at the University of Chattogram showed that when one liter of kerosene was sprayed with a maximum adult lethal dose of 16.9 milliliters, only 14% of mosquitoes were killed. But if the same amount of insecticide is sprayed with a sprayer, 100% of mosquitoes are destroyed. But since this level of medicine is harmful to the environment, the city corporation does not use it. In addition, mixing 16.9 ml of larvicide in 1 liter of kerosene gave 100% results.

Since the uncontrolled use of chemical pesticides is harmful to humans, animals and the environment, the expert group recommended the use of biological control methods as an alternative to mosquito control. These include – control of larvae by breeding fish, destruction of larvae using microorganisms, destruction of larvae using plant extracts, etc. However, according to expert audits, the mosquito eradication program still continues with insecticides that are less than 20% effective.

Muhammad Umar Farooq, member of the expert group and associate professor of botany at Chattogram University, told The Business Standard, “If you want a permanent solution, you have to use biological methods. There is no alternative. Except the mosquito. By importing Bti technology, livestock can be easily managed, which the technology is used as a larvicide to kill larvae so they can develop into adults that can bite humans.”

He also said, “If neem, mint and tulsi trees are planted on roadsides, the menace of mosquitoes will be reduced a lot. City corporation and Chattogram Development Authority are also planting trees on roadsides for beautification. They can plant recommended trees.”

On September 9, the Chattogram City Corporation wrote to MdBenjirAlam, director general of the Department of Agricultural Extension, requesting a report on Moskuban herbivores.

The city corporation is expecting the report next week.

The Corporation’s Acting Chief Conservation Officer Abul Hasham told The Business Standard, “We have written to the Department of Agriculture for the approval of a drug as per the recommendations of experts. They are testing this drug. The initial use will begin in ‘mosquito hot spots’. Good output.” does”.

He also said: “We have identified Pahartali, Doublemuring, Agrabad, Halishahar and Bahaddarhat areas of the city as hotspots. As a result of investigations by the Institute of Epidemiology, Disease Control and Research, it has been found that mosquito breeding also occurs in abandoned tires and roof corners. We are conducting daily operations , those who do not clean the roof gardens are fined.”

Earlier, mosquito nets cost Tk 500-600 per litre. AbulHashem added that the price of new medicines will be Tk 1200 per liter.

Leave a Comment