Showing posts with label Microbiology. Show all posts
Showing posts with label Microbiology. Show all posts

Sunday, April 7, 2013

Complication of BCG vaccine


Complication of BCG vaccine
Complication of BCG vaccine

BCG vaccine is used to prevent tuberculosis related to meningitis as well as disseminated TB in humankind. Although severe cases of complication of BCG vaccine are rare, there are selected cases where acute reactions have been observed.  These cases include a situation where a test was carried out on a patient with erythematous (7-mm) nodule at 4cm – distance from the vaccination site. During this test, histopathologically, a reaction (necrotizing granulomatous) pattern was observed in the dermis.

Saturday, April 6, 2013

Causative organism of tuberculosis and its structure


Causative organism of tuberculosis and its structure
Mycobacterium

Common and lethal in most cases, tuberculosis (TB) is an infectious disease associated with various types of mycobacteria, normally the mycobactrium tuberculosis. It mostly affects the lungs but can spread to other parts of the body. As an airborne disease, it is easily spread through the air especially so when TB victims sneeze, cough or emit respiratory fluids to the air. Most of the TB infections are asymptomatic and latent but it is

Wednesday, April 3, 2013

Diseases caused by herpes virus


Diseases caused by herpes virus
Diseases caused by herpes virus

There are various diseases caused by herpes virus. Genital herpes and sores around the mouth are some of the health conditions one may experience once infected with one type of the herpes virus. Facial sores may also occur in individuals victimized by the herpes virus.

In certain cases, another type 3 three of the virus has been associated with chickenpox as well as shingles in adults. This occurs as a result of the varicella zosta virus. Mononucleosis condition, a highly contagious infection of the herpes virus, is characterized by coughing, sneezing and

Tuesday, April 2, 2013

Types of herpes virus


Types of herpes virus

There are 8 different types of herpes virus known to affect human beings and they are popularly known by numbers from HHV1 to 8.

Types of herpes virus

HHV 1

This is also referred to as herpes simplex virus 1 or HSV1. This is one of the types of herpes virus that can spread to the genital area resulting to genital herpes. This is mainly through genital contact (oral). HHV 1 is highly contagious and can spread through broken skin or mucous membranes when one comes into direct contact with an infected person. This can also spread through sharing of things like utensils, towels from people with active lesions and razors

Monday, April 1, 2013

Structures of herpes virus


Structures of herpes virus


Structures of herpes virus
According to researches, all animal herpes viruses have similar properties. The herpes virus has a double-stranded, DNA genome (linear) which is found within a cage called caspid, an icosahedral protein cage. It is wrapped in a lipid bilayer commonly known as envelope. By means of tegument, the enveloped is attached to the caspid.