GIARDIASIS
Spread the loveGiardiasis is a water-borne protozoal diarrheal-disease that is cause by parasites in the genus Giardia. The disease is a common intestinal infection which […]
THE TRIANGLE OF EPIDEMIOLOGY
Spread the loveThe characteristics of a disease are largely dependent on the relationship between the environment, the disease causing microorganism (pathogen) and a susceptible host. […]
TYPES OF EPIDEMIOLOGICAL STUDIES
Spread the loveAn epidemiological study usually involves two important steps that must be put into consideration prior to the investigation of disease/infection outbreak. The first […]
CATEGORIES OF BIOLOGICAL AGENTS USED FOR BIOTERRORISM
Spread the loveCATEGORY “A” BIOLOGICAL AGENTS Category “A” Biological Agents are high-priority agents which pose the greatest security and health threat in a population. They […]
MODE OF DELIVERY/TRANSMISSION OF BIOLOGICAL AND CHEMICAL AGENTS OF BIOTERRORISM
Spread the love Through air: Dissemination of biological or chemical agents as aerosols in the atmosphere is perhaps the best and most feared method of […]
BIOTERRORISM
Spread the loveBioterrorism is simply defined as the unauthorized, threatened, and deliberate use of microbes (including bacteria, fungi or viruses) and their products (e.g. spores […]
ZOONOTIC INFECTIONS
Spread the loveThe phrase ‘Zoonosis’ is a Greek word that comes from zoon (which means animal) and osis (which means ill). Zoonoses (plural: zoonosis) therefore, […]
RESPONSES OF THE IMMUNE SYSTEM
Spread the loveThe immune system is a complex system which consists of collection of cells, organs, tissues and molecules that work together to protect an […]
TYPES OF ANTIBODIES
Spread the loveImmunoglobulins do not actually kill or eliminate pathogenic microorganisms or antigens from the body. The role of antibodies during an infection is to […]
CELLS OF THE IMMUNE SYSTEM AND THEIR ORIGIN
Spread the loveAll the cells of the immune system inclusive of blood cells originate from the bone marrow during haematopoiesis from progenitor haematopoietic stem cells(Figure […]
ANTIGEN-ANTIBODY REACTION
Spread the loveAntigen-antibody reaction is an immunological reaction in which a particular antibody molecule reacts with a specific antigen to form an antigen-antibody complex which […]
CHARACTERISTICS OF ANTIGENS
Spread the loveHowever antigenic a foreign molecule/substance may be; to be immunogenic and qualify to be called an actual antigen to the extent of eliciting […]