Hepatitis A is an infection of the liver caused by the hepatitis A virus. The well-respected World Health Organization (WHO) estimates that almost 1.5 million new cases of hepatitis A related illnesses occur each year worldwide, with a much higher number of people than this affected without showing any symptoms. The condition is more prevalent in the developing world where poverty and sanitation issues are rampant.

Hepatitis A is regarded as an acute infection as opposed to a chronic one, but in rare occurrences it can cause liver damage that is life threatening. The severity of symptoms in patients with the virus varies from individual to individual and whereas some may have no symptoms at all, others may develop symptoms to those similar of catching flu. As a rule, the older a person is, the more severe the infection, and therefore the symptoms, will be.

Some of the symptoms associated with hepatitis A include tiredness, weakness, fever, headache, nausea, loss of appetite, vomiting, dehydration and diarrhea. After a week or so of these symptoms, jaundice will appear. This occurs because in hepatitis infections, the liver is unable to remove a substance known as bilirubin from the blood. The skin and whites of the eyes become a yellow color because of the buildup of this pigment.

Hepatitis can be avoided be taking the following precautions: high levels of personal hygiene, drinking safe tap water and getting vaccinated against the disease if a visit to a high risk country is to be taken.

Rotavirus infection affects the stomach and intestines in children with symptoms including diarrhea and vomiting. Most cases of the rotavirus infection are mild and usually clear up without medical intervention within a few days but some children, especially toddlers under the age of two, can be at risk of dehydration so it is essential to keep them hydrated with plenty of fluids.

The rotavirus infection is spread by infected people who haven’t washed their hands properly after going to the toilet. This can cause tiny amounts of infected feces being passed on to the child.  Small amounts of these infected feces can also be carried in the air resulting in the child inhaling them. Most children will have contracted the rotavirus infection by the age of five.  The rotavirus infection is more common during the winter and spring and it is usually common for the first virus to be the worst as after that the child will have built up some immunity.  It is for this reason that the rotavirus is rare in adults.

Rotavirus Infection

The rotavirus is extremely contagious in children and can even infect children who have already had the infection due to full immunity not being built up.  It is a good idea to isolate an infected child for a period of at least 48 hours after they have stopped having diarrhea and vomiting.

Symptoms of the rotavirus infection include rapid onset of diarrhea and vomiting and also occasionally a high temperature of 38C or above however it is important to recognize the signs of dehydration as this can occur if not enough fluids are taken.  Signs of dehydration include weakness, rapid breathing, little or no urine, or dry mouth and eyes.

The most important thing to do for a child with the rotavirus infection is to keep them hydrated and the infection will usually pass within a few days.

West Nile Virus is a disease which is spread by mosquitoes and for the most part is not a serious disease.  Often there are no symptoms but sometimes if an infected mosquito bites somebody it can lead to inflammation of the brain, spinal cord or the tissues which surround the brain and spinal cord.

The West Nile Virus is caused when a mosquito feeds on an infected bird and then bites an animal or human.  Most of the time people with West Nile Virus have no symptoms but some people experience symptoms which include headache, muscle ache, loss of appetite, fever, nausea, vomiting, back pain, abdominal pain, sore throat and diarrhea.  The symptoms will usually surface roughly three to 14 days after the infected mosquito bite and will last for approximately three to six days.

There can be complications however, and sometimes the virus can cause an infection of the brain and nervous system.  Symptoms of this would include severe headaches, high fever, stiff neck, lack of co-ordination, muscle tremors, convulsions, coma, disorientation, coma or even partial paralysis.

West Nile Virus is not serious if symptoms are mild.  However, if the virus spreads to the brain or spinal cord it can lead to brain damage or death.

The best way to avoid the virus is to protect against mosquito bites at all times when away.  It is advisable to check whether the virus is present in the country you are visiting and take extra precautions against being bitten.

West Nile Virus