{"id":2094,"date":"2020-07-20T15:54:21","date_gmt":"2020-07-20T15:54:21","guid":{"rendered":"https:\/\/murreeroad.org\/Biology10\/?p=2094"},"modified":"2020-07-20T15:54:21","modified_gmt":"2020-07-20T15:54:21","slug":"q-12-write-a-note-on-dengue-fever","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/Biology10\/q-12-write-a-note-on-dengue-fever\/","title":{"rendered":"Q.12 Write a note on Dengue Fever."},"content":{"rendered":"<p><strong>Q.12 Write a note on Dengue Fever.<\/strong><\/p>\n<p><strong>Answer:<\/strong><br \/>\n<strong>Introduction<\/strong><br \/>\nIt is a viral infection transmitted through a mosquito Aedes aegypti. Occurrence<br \/>\nIt has become a major health problem in tropical and sub-tropical countries, including Pakistan. Types of Dengue Virus<br \/>\nThere are four types of dengue viruses. Recovery from infection by one provides lifelong immunity against that virus but provides no protection against infection by the other three.<br \/>\n<strong>Dengue Infection per year <\/strong><br \/>\nAccording to WHO, there are 50 million dengue infections worldwide every year. Now there are 2.5 billion people at risk from dengue.<br \/>\n<strong>Spreading <\/strong><br \/>\nThe female Aedes mosquito gets the virus when it bites an infected person. When an infected mosquito bites another person, viruses enter his\/her blood and attack white blood cells. Inside WBCs, viruses reproduce and destroy them.<br \/>\nIn severe cases, the virus affects liver and bone marrow. As a result there is a decrease in the production of blood platelets and patient suffers from bleeding.<br \/>\n<strong>Other symptoms <\/strong><br \/>\nHigh fever, severe headache, pain behind eyes, muscle joint pains and rash<br \/>\n<img loading=\"lazy\" class=\"size-full wp-image-2095 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/pains-and-rash.jpg\" alt=\"\" width=\"523\" height=\"140\" srcset=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/pains-and-rash.jpg 523w, https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/pains-and-rash-300x80.jpg 300w\" sizes=\"(max-width: 523px) 100vw, 523px\" \/><br \/>\n<strong>DHF and DSS<\/strong><br \/>\nSometimes, dengue fever converts into dengue haemorrhagic fever (DHF) or into dengue shock syndrome (DSS). DHF results in bleeding, low levels of blood platelets and blood plasma leakage. In DSS, the blood pressure falls dangerously low.<br \/>\n<strong>Treatment <\/strong><br \/>\nThere is no vaccine or treatment for dengue fever.<br \/>\n<strong>Control <\/strong><br \/>\n<strong>(a) Check the spreading of Aedes <\/strong><br \/>\nAt present, the only method of controlling dengue virus transmission is to check the spread of Aedes mosquitoes. Aedes aegypti breeds primarily in the containers used for water storage, discarded plastic containers, used automobile tyres and other items that collect rainwater.<br \/>\n<strong>(b) Proper solid waste disposal <\/strong><br \/>\nThe mosquitoes can be controlled through proper solid waste disposal and improved water storage practices.<br \/>\n<strong>(c) Killing the Larvae of the Mosquito <\/strong><br \/>\nSmall fish and crustaceans have also been used for killing the larvae of the mosquito. Insecticide sprays have not proved efficient in killing the mosquitoes because spray does not penetrate all habitats of adult mosquitoes.<br \/>\n<a href=\"https:\/\/murreeroad.org\/Biology10\/unit-16-man-and-his-environment-long-questions\/\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-1462 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/06\/back_button.png\" alt=\"\" width=\"150\" height=\"45\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Q.12 Write a note on Dengue Fever. Answer: Introduction It is a viral infection transmitted through a mosquito Aedes aegypti. Occurrence It has become a major health problem in tropical and sub-tropical countries, including Pakistan. Types of Dengue Virus There are four types of dengue viruses. Recovery from infection by one provides lifelong immunity against&hellip;&nbsp;<a href=\"https:\/\/murreeroad.org\/Biology10\/q-12-write-a-note-on-dengue-fever\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Q.12 Write a note on Dengue Fever.<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[27],"tags":[],"_links":{"self":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/2094"}],"collection":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/comments?post=2094"}],"version-history":[{"count":1,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/2094\/revisions"}],"predecessor-version":[{"id":2096,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/2094\/revisions\/2096"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/media?parent=2094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/categories?post=2094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/tags?post=2094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}