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HIV is a virus that can spread between people and cause infection. If you have the virus, you may develop a condition called AIDS. There is treatment for HIV and AIDS.
Measles is a disease caused by a virus. Some people become seriously ill. The disease is rare in Sweden because the measles vaccine is included in the vaccination programme for children.
Tuberculosis is a disease of the lungs. The disease causes coughing for several weeks. Most people recover completely with treatment.
Gastroenteritis is very common and usually passes quickly. You may feel nauseated, vomit and have diarrhoea. If you have gastroenteritis, it is important that you drink more than usual.
RSV (respiratory syncytial virus) infections are very common. Most children who get it will have cold-like symptoms. Some children may become very ill and need hospital care.
Having a fever means that your body temperature is higher than usual. It is the body’s way of defending itself against infection. Children often get a fever.
Does it feel itchy on your scalp, which is the skin close to your hair? It could be due to lice. Lice are only spread through direct hair-to-hair contact. If you have lice, you should treat it as soon as possible. You do this yourself at home.
Ticks are small insects that bite into the skin and suck blood. Remove any ticks that you find on your skin. Ticks can sometimes spread diseases. If you are bitten, you may need to seek medical care.