Candidiasis and types of Candidiasis

Candidiasis and types of Candidiasis

Candidiasis definition Candidiasis is also known as moniliasis, is a fungal disease that is classified under opportunistic fungal infection, because of its occurrence in persons with an immune-suppressed system, especially newborns, HIV/AIDS patients, patients on antibiotic therapies, cancer therapy patients. … Read more

Mode of Transmission of Diseases

Mode of Transmission of Diseases

The traditional epidemiologic triad model holds that infectious diseases result from the interaction of agent, host, and environment. More specifically, transmission occurs when the agent leaves its reservoir or host through a portal of exit, is conveyed by some mode of transmission, and enters … Read more

Enterotoxigenic E. coli (ETEC)

Enterotoxigenic E. coli (ETEC)

Enterotoxigenic E. coli (ETEC) is defined as containing the E. coli strains that elaborate at least one member of two defined groups of enterotoxins: heat-stable toxin (ST) and heat-stable toxin (LT). Enterotoxigenic Escherichia coli, or ETEC, is thus the name given to a group … Read more

Source and Reservoir of Infection

Source and Reservoir of Infection

The starting point for the occurrence of a communicable disease is the existence of a reservoir or source of infection. The source of infection is defined as “the person, animal, object or substance from which an infectious agent passes or … Read more

Endemic Diseases

Endemic Diseases

Communicable diseases are termed endemic when they have a relatively stable pattern of occurrence in a given geographical area or population group at the relatively high prevalence and incidence. It refers to the constant presence of a disease or infectious … Read more

Disease Prevention

Disease Prevention

Disease prevention is a procedure through which individuals, those with risk factors for a disease or without the risk factors, are treated in order to prevent a disease from occurring. Treatment normally begins either before signs and symptoms of the … Read more

Enteroinvasive E. coli (EIEC)

Enteroinvasive E. coli (EIEC)

Enteroinvasive E. coli (EIEC) strains are rare in both developed and developing countries. EIEC infections are characterized by a period of watery diarrhea that precedes the onset of scanty dysenteric stools containing blood and mucus. Pathogenic strains are primarily associated … Read more

Enteroaggregative E. coli (EAEC)

Stages of pathogenesis of EAEC

Enteroaggregative E.  coli (EAEC) are a heterogeneous collection of strains characterized by their autoagglutination in a “stacked-brick” arrangement over the epithelium of the small intestine and, in some cases, the colon. EAEC strains are currently defined as  E. coli strains that do … Read more

The Germ Theory of Disease

Germ Theory of Disease

Before the Germ theory of disease, the causes suggested for the occurrence of disease were the effect of supernatural phenomena like planetary alignments, effect of bad bodily humors and the faulty environment. For example, in ancient Greece, it was thought … Read more