English, asked by kaitpari8682, 1 year ago

Written a letter about dangue points

Answers

Answered by Ayeshaarifmemon
1
Dengue fever is an infection caused by dengue viruses, of which there are four different serotypes known to infect humans.

Serotype refers to groups of microorganisms that are extremely closely related, but can be distinguished by having slightly different antigens (a foreign substance which causes the body to produce antibodies) or causing the body to produce slightly different antibodies.

Dengue fever occurs in tropical and subtropical areas of the world, including northern Australia.

Dengue is a notifiable condition1

How dengue fever is spread

In Australia the dengue virus is transmitted by a bite from the Aedes aegypti mosquito. Only the female mosquito transmits the dengue virus. This mosquito is a daytime biter, both inside and outside homes, and is most active in the hours after sunrise and before sunset. Other species of mosquito can transmit the virus but are not presently established in Australia.

Aedes aegypti mosquitoes breed inside and outside the home in containers holding water and rarely fly more than 200 metres from the breeding site. They do not breed in creeks, swamps, pools or other bodies of water.

Signs and symptoms

The disease has a sudden onset and symptoms may include:

fever for 3 to 7 days

intense headache and pain behind the eyes

muscle and joint pain

loss of appetite

vomiting and diarrhoea

skin rash

bleeding, usually from the nose or gums.

Recovery is sometimes associated with prolonged fatigue and depression.

Repeated episodes of dengue fever may result in excessive bleeding and shock but, with appropriate treatment, are rarely fatal.

Diagnosis

Diagnosis of dengue fever is made by clinical presentation and a blood test.

Incubation period

(time between becoming infected and developing symptoms)

3 to 14 days, commonly 4 to 7 days.

Infectious period

(time during which an infected person can infect others)

A mosquito becomes infected if it bites an infected person while the fever is present (an average period of about 3 to 5 days).

After biting an infected person it takes 8 to 12 days before the mosquito can infect other people.

The mosquito remains infectious for life.

Dengue fever is not directly spread from person

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