Meningococcal disease can progress rapidly from flu-like symptoms to severe illness

Meningococcal disease can rapidly become severe, even fatal, within hours of initial symptoms like headache. Early signs such as fever, severe headache, and vomiting can mimic the flu but may quickly progress to serious complications like meningitis or sepsis. Vaccination is recommended to protect against common strains of meningococcal disease, which spreads through respiratory droplets and close contact.