W. David Colby IV MSc MD FRCPC


Meningitis

What is meningitis? Meningitis is inflammation of the lining around the brain and spinal cord. It is usually caused by an infection. The infection occurs most often in children, teens, and young adults. Also at risk are older adults and people who have long-term health problems, such as a weakened immune system. There…

Giardiasis

What is giardiasis? Giardiasis (say “jee-ar-DYE-uh-sus”) is an infection of the intestines caused by the parasite Giardia lamblia. The illness, also called giardia (say “jee-AR-dee-uh”), is most often a problem in undeveloped countries where tap water is not safe. How can you become infected with giardia? You may become…

Food Poisoning

Food poisoning is an illness caused by eating foods that have harmful germs in them, like bacteria, parasites, and viruses. These germs are mostly found in raw meat, chicken, fish, and eggs, but they can spread to any type of food. They can also grow on food that is left out on counters or outdoors or is stored too long…

Garrapata occidental de patas negras

Fuente: Public Health Image Library (PHIL). James Gathany; William Nicholshon. Disponible en línea en: http://phil.cdc.gov La garrapata occidental de patas negras es una de las dos clases de garrapatas en los Estados Unidos que son portadoras de las bacterias de la enfermedad de Lyme.

Thick and Thin Blood Smears for Malaria

Doctors use thick and thin blood smears to determine whether you have malaria. If one test is negative and no parasites are found, you will have repeated blood smears every 8 hours for a couple of days to confirm that there is no malaria infection. Blood smears are taken most often from a finger prick. Thick and thin…