As Kerala witnesses a third outbreak of the Nipah virus, Uttar Pradesh is plagued by a mysterious dengue-type fever that has killed at least 100 people, mostly children, in recent weeks.
Mumbai is also seeing an increase in dengue cases compared to last year: 129 in 2020 to 138 in the last eight months of 2021. As for malaria, 3,338 cases have been reported in the financial capital so far. to August 29 of this year. As new cases of dengue and malaria increase amid the Covid-19 pandemic, here’s a look at the top mosquito-borne diseases in numbers.
What are vector-borne diseases? Human diseases caused by parasites, viruses and bacteria transmitted by vectors, according to the World Health Organization. These diseases account for over 17% of all infectious diseases, causing more than seven lakhs of deaths worldwide each year.
Many of these vectors are blood-sucking insects, which take up pathogenic microorganisms during a blood meal from an infected host (human or animal) and later transmit it to a new host. When a vector becomes infectious, it is able to transmit the pathogen for the rest of its life with each subsequent bite / blood meal.
Mosquitoes are just one type of vectors, which cause diseases such as malaria, dengue chikungunya, etc. ), sand flies (sand flies), ticks (Crimean-Congo hemorrhagic fever), triatomines (Chagas disease) and tsetse (sleeping sickness).