The Chickenpox vaccine protects against the Varicella Zoster virus that causes the illness known as chickenpox. The Chickenpox Vaccine is not routinely offered as part of the standard childhood vaccination schedule unless someone is in close contact within their family group to a person who is particularly vulnerable to chickenpox and its complications.
Yellow Fever is spread by biting mosquitoes and is a very unpleasant illness that is endemic in Central and South America, Trinidad in the Caribbean and parts of Africa. The good news is that prevention of Yellow Fever is perfectly possible with the Yellow Fever vaccine.
Yellow Fever is a nasty and serious infection spread by mosquitoes in certain parts of the world and if you are visiting any of these areas, it is recommended that you have a vaccination before you travel.