Viruses can make you and the people around you very sick.  They cause lots of different diseases, from cold sores and warts to measles, colds and flu!  They can be very contagious - they spread very quickly from one person to another.  They can even spread in the air, in droplets that form when people cough or sneeze or from surfaces like door handles and telephones!  There are very few medicines for viruses, antibiotics don’t work on viruses so there is no point taking them!

Click on Find Out More to learn lots more about bad viruses!