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What is the life expectancy of a person without a spleen?

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As of 2015, a person without a spleen has a normal life expectancy, although the body is more susceptible to developing serious infections, according to WebMD. The spleen is instrumental in maintaining the body's ability to protect itself against bacteria that cause illnesses such as meningitis, influenza and pneumonia.

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Doctors typically give patients without spleens vaccinations to immunize them against dangerous bacteria such as Streptococcus pneumoniae about 14 days after emergency surgery, and about 14 days prior to scheduled surgery, explains WebMD. Adults who have undergone splenectomies and have international travel plans should have antibiotics available to take immediately if they become ill. Children who have had their spleens removed often need daily doses of antibiotics to protect against bacterial infections.

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