Dr. Christopher Joseph Harrison M.D.

The MMR (measles, mumps, and rubella) vaccine is recommended for all children as it is the safest, most effective way to protect children against three diseases that can have serious, even fatal, consequences.  Measles is a highly contagious viral infection whose initial symptoms include fever,...

What is pertussis?Pertussis, or whooping cough, is a highly contagious airborne disease of the respiratory system and can occur in children, adolescents, and adults of any age, unless they are vaccinated. The frequency of the occurrence in the U.S. are very promising, as annually there are 5,000 to...

Are there any circumstances under which vaccination of young children is forbidden?There are particular conditions when the immunization of your child, unfortunately, cannot be performed. If all terms and conditions are followed accordingly, complications are avoidable. These are the circumstances...

What is mumps?Mumps is a highly contagious viral infection. The virus invades the parotid glands of the individual causing pain and inflammation of these glands. It is characterized by a “hamster-like” swelling of the patient’s face. The initial symptoms may take up to two weeks to manifest....

Meningitis occurs when the meninges, the protective membranes surrounding the brain and spinal cord, get inflamed or irritated. Meningitis is an outcome of certain bacteria or viruses entering the body when our immune system is weak.These bacteria and viruses live in the nose, throat, or the...

Is Cholera Contagious?Cholera is one of the most dangerous infections that has claimed the lives of many people especially people living in very poor environmental areas. These are areas where there is poor sanitation, poor ventilation, and dirty water. Most of the victims of cholera over many years...