Dr. Mark Harrison Sawyer M.D.

What does the term “low immunity” mean?When you notice that your child catches a cold or the flu more often than other family members, or when it takes a long time for any wounds to heal, you begin to think that there is something wrong with your child's resistance.Low immunity is a term that...

 What is active immunity?...

Can You Contract Cholera Through Other Means Besides Water?Cholera is an infection that causes thousands of deaths around the world every year. The biggest challenge posed by cholera is that it is difficult to control and treat at the same time. The infection spreads very fast affecting a huge...

It is natural to be concerned about whether immunization is safe for your child or not. However, doctors recommend getting children immunized because vaccines are thoroughly checked before they are licensed for use. The measles, mumps, and rubella (MMR) vaccine is the most effective way to protect...

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...

As complex as it is, meningitis can sometimes be a threat to life. Treating meningitis can be tricky, hence, it needs a team of medical practitioners to make a diagnosis and offer treatment for the condition.  You can call your doctor immediately under the following circumstances:...