W. David Colby IV MSc MD FRCPC


Neisseria Meningitidis

Meningitis caused by Neisseria meningitidis is sometimes referred to as meningococcal disease. Some people have Neisseria meningitidis in their throats without getting sick. But they can pass it to another person, who may get sick. Neisseria meningitidis causes meningitis in about 25 out of 100 people who get the…

Meningitis

Meningitis is swelling of the lining around the brain and spinal cord. It can cause you to have a stiff neck, a fever, a headache, vomiting, trouble staying awake, and seizures. It is usually caused by a virus or bacteria. You can spread the germs that cause meningitis through coughing or close contact. Some types of…

Chronic Lyme Arthritis

Chronic Lyme arthritis is a recurring form of joint inflammation caused by Lyme disease, a bacterial infection that is spread through tick bites. Symptoms of chronic Lyme arthritis include episodes of swelling, redness, and fluid buildup in one or more joints that last up to 6 months at a time. When a person is not…

Rapid Sputum Tests for Tuberculosis (TB)

Rapid sputum tests are used to diagnose tuberculosis (TB) when other tests show that a person probably has TB. Rapid sputum tests are also called nucleic acid amplification tests (NAATs). One of the best ways to diagnose TB is through a sputum culture. A sputum culture is a test to find germs (such as TB bacteria) that…

Lyme Disease

Discusses Lyme disease, an infection spread by ticks. Includes info on deer ticks. Covers symptoms and Lyme disease tests. Covers treatment with antibiotics. Includes info on complications from not treating Lyme disease. Offers prevention tips.