Infectious disease results from the interaction of an agent a host and an environment. Most of these diseases follow a typical chain of infection that ends with an infected host.Infection is the invasion of an organisms body tissues by disease-causing agents their multiplication and the reaction of host tissues to the infectious agents and the toxins they produce.a b c d f g h i l m n o p r s t v w x. a abiotic non-living or a condition caused by a non-living agent (e.g. cold temperature nutrient deficiency) ascospore a
Lyme disease is caused by the bacterium Borrelia burgdorferi and is transmitted to humans through the bite of infected blacklegged ticks. Typical symptoms include fever headache fatigue and a characteristic skin rash called erythema migrans.Chapter 7 Asepsis and Infection Control Cooper and Gosnell Foundations and Adult Health Nursing 7th Edition MULTIPLE CHOICE 1.What is true regarding surgical asepsis a. It inhibits growth of pathogenic organisms. b. It is known as a cleaning technique. c. It includes hand hygiene. d. It is known as a sterile technique. ANS D Surgical The natural history of malaria involves cyclical infection of humans and female Anopheles mosquitoes. In humans the parasites grow and multiply first in the liver cells and then in the red cells of the blood.
P1 is a temperate bacteriophage that infects Escherichia coli and some other bacteria. When undergoing a lysogenic cycle the phage genome exists as a plasmid in the bacterium unlike other phages (e.g. the lambda phage) that integrate into the host DNA.bottom of page. BACKGROUND. Introduction. Lyme disease (LD) is a tick-borne zoonosis caused by the spirochaete bacterium Borrelia burgdorferi. Since the disease was first recognised in 1975 it has become the most frequently reported human tick-borne infection worldwide.