The UK Health Security Agency (UKHSA) has issued a warning about a potential second wave of norovirus, commonly known as the winter vomiting bug. This alert comes as cases reach exceptionally high levels, with a notable shift in the dominant strains of the virus.
Recent data indicates that norovirus cases have surged across the UK, reaching the highest levels in over a decade. Laboratory-confirmed cases between February 3 to 16 were 29% higher than the previous two weeks and more than double the five-season average for the same period.
Hospitals are under pressure, with an average of 1,160 patients hospitalized daily due to norovirus, a 22% increase from the previous week and more than double the number from the same period last year. The UKHSA has identified a shift in circulating norovirus strains.
While the GII.17 genotype has been dominant this winter, the GII.4 strain is now on the rise, representing 29% of cases compared to just 10% three months ago. This change means individuals who have already contracted norovirus this season could be at risk of reinfection with a different strain.
Given the highly contagious nature of norovirus, health officials advise the public to take precautions. If you experience symptoms such as nausea, vomiting, diarrhea, or stomach pain, stay at home and avoid contact with others until 48 hours after your symptoms have ceased.
This isolation period helps prevent the spread of the virus. Wash your hands frequently with soap and water, especially after using the toilet and before eating or preparing food, as alcohol-based hand gels are ineffective against norovirus.
Avoid visiting hospitals, care homes, or attending work, school, or nursery until 48 hours after symptoms have stopped, as you can still transmit the virus during this period. Norovirus symptoms typically include nausea, vomiting, diarrhea, and stomach cramps.
Some individuals may also experience a high temperature, headache, and aching limbs. Symptoms usually last for two to three days, and treatment focuses on staying hydrated and resting.
If symptoms persist or worsen, seek medical advice. With norovirus cases at unprecedented levels and the potential for a second wave due to emerging strains, it is crucial to follow public health guidelines. By practicing good hygiene and isolating when unwell, individuals can help reduce the spread of this highly contagious virus.
