Which of the two spreads dengue : mosquito or housefly ?
Q21) Genetically modified sterile mosquitoes are being used in Brazil to control Dengue and Chikungunya. Consider the following statements regarding this.
1) The male mosquito’s bite spreads the disease
2) Sustained release of genetically modified sterile female mosquitoes (OX513A) in the city every week for one year helped cut the transmission rate drastically
3) Dengue is caused by Aedes aegypti mosquito.
Which of the above statements is/are correct?