They're the most common cause of stomach bugs (gastroenteritis) in the UK. Each year, it's estimated that between 600,000 and 1 million people in the UK catch norovirus. The illness is sometimes called the winter vomiting bug because it's more common in winter. However, you can catch the virus at any time of the year.hey're the most common cause of stomach bugs (gastroenteritis) in the UK. Each year, it's estimated that between 600,000 and 1 million people in the UK catch norovirus. The illness is sometimes called the winter vomiting bug because it's more common in winter. However, you can catch the virus at any time of the year.
On the contrary, individuals who are carriers for the sickle cell disease (with one sickle gene and one normal hemoglobin gene, also known as sickle cell trait) have some protective advantage against malaria.
Many of the same antimalarial medicines used to prevent malaria can also be used to treat malaria. However, if you have taken an antimalarial to prevent malaria, you should not take the same one to treat malaria if you still become infected.any of the same antimalarial medicines used to prevent malaria can also be used to treat malaria. However, if you have taken an antimalarial to prevent malaria, you should not take the same one to treat malaria if you still become infected.