Russian health officials are reporting a rise in meningococcal infections, with a change in the dominant serogroup and a higher proportion of adult cases. Experts suggest that migration patterns may be a contributing factor, though the overall situation is described as stable.

The increase in cases is attributed to a cyclical pattern, with the dominant serogroup of meningococcus shifting from W to A. The Russian Federation’s Rospotrebnadzor notes that outbreaks have been observed among labor migrants, but timely interventions, including vaccination, have prevented widespread infection.

Despite the increase, authorities assure that the situation remains stable, with most regions reporting either no spread or only isolated cases. Virologist Sergey Netesov emphasizes that the number of meningococcal cases is still significantly lower than those of the flu or coronavirus.

Meningococcal infection is caused by a bacterium transmitted through airborne droplets. While many infected individuals remain asymptomatic carriers, the infection can lead to severe complications, including meningitis, meningoencephalitis, and generalized infection. Infectious disease doctor Andrey Pozdnyakov warns that generalized infection can manifest as a pronounced rash, potentially leading to necrosis and even limb amputation. Hemorrhage into the adrenal glands, known as Waterhouse-Friderichsen syndrome, is a particularly dangerous complication that often results in death.

Vaccination is considered the most reliable form of protection against meningococcal infection. In addition to vaccination, preventive measures include thorough handwashing, avoiding hypothermia, ventilating rooms, using masks, and avoiding contact with individuals displaying symptoms of respiratory infections.