Kill the larvae with ... bacteria

Use bacteria to kill . larvae. A group of scientists at the HCMC Pasteur Institute has successfully studied microbial products from Bacillus thuringiensis subsp. israelensis serotype H14 kills larvae.

Dr. Ho Thi Hong Nhung - Pasteur Institute in Ho Chi Minh City and her colleagues have successfully researched a microbial inoculant from the bacterium that has been eradicated in many different living conditions. Just 200g of this composition, with a cost of about 300,000 VND, can protect an area of ​​1 ha from the larval mound.

This is the result of the scientific research "Research on the production of microbial inoculants from Bacillus thuringiensis subsp. Israelensis serotype H14 to kill mosquito larvae". Research period of the project lasts from January 2006 to September 2007.

Litter larvae die after exposure to microbial preparations from Bacillus thuringiensis subsp.israelensis serotype H14.(Photo: H.Bung)

The research team was initially successful in the production of B. thuringiensis subsp. israelensis H 14 (Bti) with high performance, about 1 ton / month. The probiotic containing this bacterium has the effect of destroying larvae in various living conditions, from stagnant water ponds to canals.

When Bti follows water and food into the larval intestine, the toxin of the bacteria will cause intestinal perforation and the larval destruction. However, before making extensive use, the above-mentioned bacterial preparations must also be approved by the Scientific Council established by the Department of Science and Technology of Ho Chi Minh City.

It is worth noting that the research has been invested by a private company operating in the biotechnology field, not using state funding.

Worldwide, developed countries such as North America and Europe have controlled dengue epidemic due to limited practice. One of the measures is to use Bti-containing probiotics to spread to natural areas where mosquitoes live.

Bti can kill all types of mosquitoes that normally carry mosquitoes as well as mosquitoes that transmit dengue fever, Japanese encephalitis, malaria, or new diseases such as Philippine Nipar encephalitis, Chikungunya encephalitis.

According to World Health Organization (WHO), in the next 5 - 10 years, all these diseases have not had preventive vaccines.

Sand incense