Health authorities are warning physicians to stay vigilant for specific rare, severe meningococcal infections surging in the US.
The US Centers for Disease Control and Prevention issued a new health alert. These infections, caused by a particular strain of Neisseria meningitidis bacteria, might show uncommon symptoms. In cases reported this year, roughly 1 in 6 individuals have died, a higher mortality rate compared to typical meningococcal infections.
These instances are peculiar as they affect middle-aged adults. Ordinarily, meningitis infections target infants or adolescents and young adults.
The CDC issued its alert following a warning from the Virginia Department of Health. In September, five deaths were reported due to the same rare, severe form of meningococcal disease.
Meningococcal disease encompasses illnesses caused by Neisseria meningitidis. This infection can result in meningitis and a severe bloodstream infection known as septicemia or blood poisoning.
The bacteria spread from person to person through respiratory and throat secretions exchange. Transmission often occurs through kissing, coughing, sneezing, or close contact with infected individuals.
There are four distinct groups of meningococcal bacteria circulating in the United States: B, C, W, and Y. According to the CDC, in 2023, there were 422 reported cases of disease caused by these bacteria in the United States, marking the highest number since 2014. The majority of cases were attributed to a specific strain, ST-1466, belonging to the Y subgroup.
As of now, 2024 seems poised to surpass that figure. Currently, 143 cases have been reported in the United States, nearly 80% more than what had been reported by this point in 2023.
According to the CDC, the majority of individuals diagnosed with this specific strain are adults aged 30 to 60. Among those affected, a significant proportion, 63%, are Black individuals, and 15% have HIV.
Classic symptoms of meningitis infections consist of fever, headache, stiff neck, light sensitivity, and nausea. However, many recently reported cases deviate from these symptoms. Approximately two-thirds of patients exhibit bloodstream infections, while about 4% experience painful, infected joints.
Symptoms of meningococcal bloodstream infections encompass fever and chills, fatigue, vomiting, cold extremities, rapid breathing, diarrhea, and, in advanced stages, a dark purple rash.
Initial symptoms can mimic various infections, but they escalate rapidly and can become life-threatening within hours, as per the CDC. Immediate antibiotic treatment is crucial. Survivors may endure lasting effects such as hearing loss or limb amputations.
A vaccine exists to safeguard against bacterial meningitis. It's advised for children aged 11 to 12, with a booster typically administered at 16 due to waning protection. Additionally, individuals with specific medical conditions compromising immune function, such as HIV, are recommended to receive this vaccine. The CDC suggests individuals in vulnerable groups should receive boosters every 3 to 5 years.
