If you are planning a trip to Africa or South America, you will require a vaccination against Yellow Fever. When you take one, you will get an internationally recognized vaccination certificate and this is mostly asked at immigration counters while you are entering a country. This is especially important if you travel by road from one country to another (for example from Kenya to Tanzania). Sometimes it will be asked while you are coming back to your home country.
Yellow Fever vaccination is required at least 10 days before the trip. Once it is done, it is valid for 10 years or recently they say it's valid for lifetime.
In Qatar follow the below steps:
Yellow fever is an acute viral disease. In most cases, symptoms include fever, chills, loss of appetite, nausea, muscle pains particularly in the back, and headaches. Symptoms typically improve within five days. In some people within a day of improving, the fever comes back, abdominal pain occurs, and liver damage begins causing yellow skin. If this occurs, the risk of bleeding and kidney problems is also increased.
The disease is caused by the yellow fever virus and is spread by the bite of an infected female mosquito. It infects only humans, other primates, and several species of mosquitoes. In cities, it is spread primarily by mosquitoes of the Aedes aegypti type. The virus is an RNA virus of the genus Flavivirus. The disease may be difficult to tell apart from other illnesses, especially in the early stages.To confirm a suspected case, blood sample testing with polymerase chain reaction is required.