microlec-1

• sources of infection are self, person, animal, and environment
• Pathogenicity- is the ability wherein the parasite inflicts damage to a host
• virulence- refers to the measure of pathogenicity in a microorganism
• host- is where the parasite or commensal lives in
• disease- is when microorganisms are established in a host either to harm them or not
• Jain Dharma- (5th century) postulated the existence of tiny organisms called “Nigodas” which lives everywhere including in bodies of plants, animals, and people.
• Marcus Terentius Varro- was a Roman scholar who called the unseen creatures “Annimacules” on his book “On Agriculture“ and warns against on locating a homestead near swamp.
• Avicenna- suggested that Tuberculosis and other diseases might be contagious
• Akshamshaddin- was a Turkish scientist who mentioned the microbes in his work “The Material of Life” two centuries prior to the experimentation of Leeuwenhoek
• Girolano Fracastoro- he proposed that epidemic diseases could transmit infection by direct or indirec contact