Archives for posts with tag: Disease

In this blog I will be covering a disease that almost everybody had at least once in their lives. This disease is known as conjunctivitis, or more commonly known as “pink eye”. There are several pathogens that cause disease; these include both bacteria and viruses. However in this entry three of the main of the viruses that cause this disease will be discussed which are measles virus, adenovirus, and Herpes simplex virus (HSV).  These viruses when dealing with conjunctivitis have the same modes of transmission, effect on body and complication. Initially to contract this virus there has to be direct contact, an example would be rubbing the infected the eye of the person that has the disease and then touching the hand of another person who will, in turn, accidently touch their eye and get it infected. The reaction to this would be a cytopathic effect (is damage that virus causes when it invades the cells of the host), which results in the inflammation of the eye. This could evolve to keratitis, which in its superficial state heals and doesn’t leave scars, but in its deeper states in effects layers of the cornea, which causes scars and damage to the vision. There is no known vaccine for conjunctivitis but it usually heals rapidly and without any complications if the patient is using the eye drops that are prescribed by the physician or any other method.  Since not being careful could lead to keratitis, as was mentioned earlier, and could lead to scarring that is quite evident if it reaches the deeper levels of the cornea.


When I was just four years old, I was fooling around at a zoo, which was typical behavior for me. I was trying to feed a monkey and the monkey reacted by almost biting off my index finger. I wasn’t sure what had happened but I definitely had a big smile on my face, even though my parents were screaming and shouting several words. The only word that stuck in my head was “rabies” because they were saying it repeatedly with urgency. The other reason I remembered that word was because I had to go get another shot (vaccination) to make sure I didn’t contract rabies. At that time I had no idea what rabies was, but after taking medical microbiology and going more in depth into the topic I realized that rabies is indeed a very dangerous disease, where if contracted and no vaccination is obtained the person who acquired it will eventually die. Rabies is a viral disease that is caused by a virus known as Lyssavirus, which comes from the virus family of Rhabdovirus. This virus is transmitted through direct contact with the infected animal, so me getting beaten by a monkey would have done the trick if the monkey was actually infected with the virus. This virus works by infecting the muscles at site of the bite and then the typical symptoms of a viral infection (fever, malaise, headache). However there is another factor to this disease. The virus is transported to the CNS causing neurological symptoms to develop, the main one being hydrophobia, while other symptoms include hallucinations, seizures, and the patient going into a coma. As the symptoms show, contracting this disease can be extremely dangerous and precautionary measures must be taken immediately otherwise the patient might face the risk of death.