Meningococcal vaccine refers to any vaccine used to prevent infection by Neisseria meningitidis. Different versions are effective against some or all of the following types of meningococcus: A, B, C, W-135, and Y. From Wikipedia
Pilgrims traveling to Saudi Arabia for Hajj and Umrah must ensure MenACWY vaccination as five UK cases linked to MenW have been confirmed this year.
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