Yellow fever is a mosquito-spread virus that occurs in Africa and South America. Symptoms appear three to six days after exposure and include headache, vomiting, fever and jaundice. Get immunized before you travel to these countries.
Instructions
* STEP 1: Get a vaccine to prevent yellow fever. The virus is made from 17D yellow fever virus strain and grown inside chick embryos. The vaccine is effective against yellow fever for 10 years; then you will need a booster vaccine.
* STEP 2: Carry a Certificate of Vaccination, issued by your health department, with you whenever you travel to South America and Africa. Many countries in these regions will not permit you to enter without a vaccination certificate or a medical waiver.
* STEP 3: Obtain a written medical waiver from your embassy officials if you or your child cannot be vaccinated. The Centers for Disease Control and Prevention says that children younger than four months old should not be vaccinated against yellow fever, and in fact, it is best to defer the vaccine until the baby is 9 to 12 months old.
* STEP 4: Defer a yellow fever vaccination if you are pregnant. There is some concern that a fetus could contract yellow fever from the vaccine. Defer it if you are allergic to eggs or have an illness, such as AIDS, that has suppressed or compromised your immune system.
* STEP 5: Avoid mosquitoes when you are in countries where yellow fever is present. Wear insect repellent and protective clothing - long sleeves and long pants.
* STEP 6: Use mosquito netting around tents and open doorways to keep mosquitoes from flying inside.
Tips & Warnings
* Yellow fever rarely occurs in travelers, since almost everyone receives the yellow fever vaccine before entering the South American and African countries.
* If you have any questions or concerns, contact a physician or other health care professional before engaging in any activity related to health and diet. This information is not intended as a substitute for professional medical advice or treatment.
2007-03-15 04:39:57
·
answer #1
·
answered by Anonymous
·
1⤊
0⤋
Yellow fever (YF) is an infectious, non-contagious affliction led to via an RNA virus of the kinfolk Flaviviridae (that reason dengue and different hemorrhagic fevers), that's transmitted to guy via the chew of hematophagous mosquitoes. First defined in the Caribbean, yellow fever is the oldest many times happening viral hemorrhagic fever. that's a re-rising infectious affliction that at the instant is in risk of urbanization using upward thrust of the Aedes aegypti vector. Geographic distribution: The affliction impacts approximately 2 hundred,000 persons each year, specifically in tropical Africa and South u . s . a . of america, alongside with the two jungle and city settings. that's an significant risk to unvaccinated travellers to those endemic areas. cutting-edge will enhance in the density and distribution of the city mosquito vector, Aedes aegypti, to boot using fact the upward thrust in air return and forth enhance the possibility of creation and unfold of yellow fever to North and needed u . s . a . of america, the Caribbean, the middle East, Asia, Australia, and Oceania. Mode of an infection: the prevalent reservoir is tree residing monkeys, virus being handed between them in the woodland cover via mosqitoes. those monkeys are a great reservoir using fact the virus neither kills them nor makes them unwell . human beings get carry of jungle yellow fever via stepping into the woodland and being bitten and inoculated via Aedes mosquitoes. Felling wood will enhance the possibility using fact mosquitoes are further down with the tree. On returning to the village or city, the sufferer turns into the reservoir for epidemic yellow fever in the city placing , the place Aedes aegypti is the vector. hence, virus transmission happens between human beings, mosquitoes, and monkeys. The mosquito, the real reservoir of YF, is contaminated in the time of its existence, and would transmit the virus transovarially by using contaminated eggs. guy and monkeys, on the different hand, play the function of short-term amplifiers of the virus obtainable for mosquito an infection. medical presentation: this is an acute ailment manifested via abrupt onset of chills and fever, conjunctival injection, leukopenia, a quick era of remission, and then reappearance of fever and jaundice, punctate hemorrhages of the flavor bud, epistaxis, and gingival and gastrointestinal bleeding (black vomit). approximately 50% of the sufferers enhance relative bradycardia regarding the diploma of fever. loss of life happens in the 2d week after onset,and is preceded via coma.
2016-11-25 21:45:00
·
answer #4
·
answered by ? 4
·
0⤊
0⤋