As Dengue Cases Surge in Uttarakhand, health officials blame Climate Change :

1. According to the Health and Family Welfare department, 3,799 cases of dengue have been reported from 4 districts of the Uttarakhand till Friday. The number may increase as post-monsoon weather will continue till mid-October.

2. At least 3,846 dengue cases have been reported in Uttarakhand so far this year. 7 fatal cases of the mosquito borne disease have also been reported. This is the highest figure of dengue patients in the state in the past several years.

3. Dengue fever is a painful, debilitating mosquito-borne disease caused by any one of four closely related dengue viruses. It causes a severe flu-like illness and, sometimes causes a potentially lethal complication.

4. The incidence of dengue has increased 30-fold over the last 50 years. Dengue fever symptoms include a fever, intense headache, body aches, joint pains, loss of appetite, nausea, vomiting, and skin rashes and mucosal bleeding.

5. The disease can be fatal in nature if it’s not diagnosed and treated on time. There is no specific treatment for dengue fever, but adequate fluid intake and bed rest is important.

6. With maximum cases being reported from plains as compared to hills, Health department officials are citing climate change as a reason for spread of the disease. According to the data of Health and Family Welfare department, 3,799 cases of dengue have been reported in four districts of the state. Health officials are saying that the number may increase because post-monsoon weather will continue till mid-October.

7. Statistically this year, till September 20, 2,434 dengue cases have been reported in Dehradun and six people have died. This is followed by tourism destination Nainital, where 1,134 patients have been diagnosed with dengue and one of them has died. Haridwar district accounts for 146 cases, followed by Udham Singh Nagar (85).

8. The geography of hill areas combined with low temperature and humidity do not support a dengue outbreak and breeding of the vector Aedes Aegypti. Dengue is a climate change-driven disease and their larva reproduces in temperatures between 20°C and 30°C and humidity above 60 per cent. Such conditions, he said, was in plain areas like Dehradun.

9. In conditions of normal monsoon and heavy rain, dengue cases were reported from September to mid-October when water remains stagnant and humidity rises after the end of monsoon. This year, dengue cases have been reported much earlier because of less and disrupted rain.

Dengue Fever :

Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection. This may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash. Recovery generally takes two to seven days. In a small proportion of cases, the disease develops into severe dengue, also known as dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is spread by several species of female mosquitoes of the Aedes type, principally A. aegypti. The virus has five types; infection with one type usually gives lifelong immunity to that type, but only short-term immunity to the others. Subsequent infection with a different type increases the risk of severe complications. A number of tests are available to confirm the diagnosis including detecting antibodies to the virus or its RNA.