The strain of norovirus called "Sydney 2012" from Australia into New Zealand, Japan and France. He had already reached the UK, which caused serious concerns of the local physicians. Despite the fact that awaited him, he descended too early.
The virus is accompanied by severe vomiting, diarrhea, fever, cramps and severe headache, and besides, it is very contagious.
As it is aptly named virologist Ian Goodfellow, this norovirus is a real Ferrari among viruses. The true picture of the incidence estimated: one laboratory confirmed case has 288 undiagnosed medical cases. Thus, in the UK alone the number of cases could reach 1.2 million people.
Fortunately, this strain does not lead to serious consequences, but this just yet, because, as you know, noroviruses have a tendency to mutate. That is why constantly emerging new strains, against which specially therapy does not exist. Doctors are only able to facilitate the course of the disease and to wait for it to recede. Usually, this happens after a few days, and in some cases the disease had lasted nearly two weeks.