Dr. Colleen S. y. Chun M.D.

Pertussis is an infection of the upper respiratory system. The disease is highly contagious and spreads through the coughing and sneezing of an infected individual. This highly contagious and airborne disease is caused by the bacteria called Bordetella pertussis. The symptoms of pertussis typically...

What is cytomegalovirus?Cytomegalovirus (CMV) is a member of the herpes virus family. Others viruses that belong to the same family are:...

IntroductionThe only way to prevent serious and life-threatening diseases such as meningitis is through vaccination. Meningitis can also be caused by viral, bacterial, and fungal infections. The infection usually affects the meninges or membranes that enclose the brain and spinal cord. Although...

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...

Center for Disease control (CDC) and Advisory Committee on Immunization Practices (APIC) have 14 vaccinations before the age of 2 years. This makes some parents concerned as it might overwhelm the immune system of their child. There are two options that parents can opt for•    Selective vaccine...

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...