William Schaffner: The most important thing is good hand hygiene. Washing with soap and water works the best. Those hand hygiene gels and wipes – the hand sanitizers – that people tend to use aren’t as effective against norovirus, so just wash frequently with good old soap and water. And then, of course, avoid people who are sick.

Norovirus is still piling pressure on the NHS as health chiefs issue advice to families how to protect yourselves against the sickness and diarrhoea bug

Typical household cleaners like hand sanitizer or wipes don't kill germs from norovirus. Here's what you can use instead.

Lehigh Valley’s health networks are seeing abnormally high cases of the stomach bug that’s taking a large number of people out of action and leaving them stuck in the bathroom.

Moderna is testing a norovirus vaccine in a phase three trial. Results could be available as soon as this year.

Experts say Norovirus is surging across the US. The CDC reported 128 outbreaks in the7-day period ending the second of January. That's the highest number for this time of year since 2012. Smithers said norovirus is a very resilient virus that can live on surfaces for multiple days. Hand washing and disinfecting surfaces are recommended.

Vomiting and diarrhoea are the most common symptoms of norovirus, and sufferers may also experience a high temperature, headache and aches and pains. The virus is spread through close contact with an infected person, touching contaminated surfaces or consuming contaminated food or drink.

Norovirus is the leading cause of vomiting, diarrhea and foodborne illness in the US, according to the Centers for Disease Control and Prevention.

Pomerene's Katie Wright suspects people are treating flu-like symptoms at home. "From a clinical perspective, we're not seeing an uptick in numbers."

If you're ill with the "stomach flu," you're not alone. Norovirus is surging across Arizona, is highly contagious and spreads rapidly.

Illinois had at least 103 outbreaks of the stomach bug norovirus in November and December – a dramatic increase from previous years, according to the Illinois Department of Public Health.

To avoid catching the virus, colloquially known as 'stomach flu,' wash hands with soap and water, and avoid touching the face. Alcohol-based hand sanitizers are not effective against it.