What is a typhoid vaccine?

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Typhoid vaccines are used to protect against typhoid fever. This is caused by the Salmonella typhi bacteria, which is not too common in the United States but is quite common in certain developing countries. Usually, people in the United States get typhoid through contaminated food or water while traveling in other countries. Typhoid fever can cause symptoms, such as high fever, headaches, stomach pain, loss of appetite and weakness. Left untreated, it may lead to death. Because it's not very common, typhoid vaccines are only recommended for people at high risk, such as those who are traveling to a country where typhoid fever is common and those who are in close contact with a typhoid carrier or Salmonella typhi bacteria. There are two different types of typhoid vaccines. The inactive typhoid vaccine contains dead Salmonella typhi bacteria, and it's given as an injection. The live typhoid vaccine contains a weakened type of Salmonella typhi bacteria, and it's taken by mouth. The inactive typhoid vaccine is injected by a healthcare professional in one dose. This shot should be given at least two weeks before travel, and then it may be given every two years for people at a continued risk for typhoid fever. This vaccine should not be given to children under two years of age. The live typhoid vaccine is taken by mouth as four doses given two days apart. The last dose should be taken one week before travel, and then it may be given every five years for people at continued risk. This type of vaccine should not be given to children under six years of age. Talk to your doctor to determine whether you need a typhoid vaccine and which type of vaccine may be right for you.   

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.