A.) What four factors must be present for an infection to spread? susceptible B.) What is the source of infection? C.) What are the main routes of transmission?

Q: Why is infection by herpesvirus permanent?

A: Introduction  Herpesviridae is a large group of DNA virus which has around 135 types found in…

Q: What is a VRE infection?

A: Bacterial diseases are bacteria-caused ailments. The human body contains a variety of microbes. Some…

Q: Why are antibacterial medications not effective for treating necrotizing fasciitis?

A: Necrotizing fasciitis or flesh-eating disease is a rare illness but potentially fatal skin infection…

Q: hat are the mitigating measures to prevent the escalation of the black Sigatoka disease? Explain.

A: A disease is a condition in which an organism's physiological functions are dysfunctional (either a…

Q: What is the difference between an emerging and a reemerginginfectious disease?

A: An infectious disease is the one that is caused by pathogenic microbes. These microbes can be…

Q: What is the figure presents? What is the relation of this figure to human disease? What are the…

A: Atherosclerosis is a disease of the cardiovascular system. The condition may arise due to smoking,…

Q: What role do virulence factors play in the four phases of infection? Describe the infection stage…

A: A disease is an abnormal state of an organism that disrupts biological processes. It might be acute,…

Q: How does knowing the anatomical location of normal microbiota help clinicians diagnose infection?

A: NORMAL MICROBIOTA:- Normal flora local flora of the human body present at several places like on the…

Q: How long does it take for SSPE to appear after the initial infection

A: SSPE/ Dawson's disease: Subacute sclerosing panencephalitis is a chronic progressive neurological…

Q: At what specific sites within the body can the poliomyelitis virus multiply? What is the usual…

A: Virus refers to the infectious agent that replicates (or multiples) in the host cells. It comprises…

Q: Can a disease be detected before its symptoms appear?Explain the principal involved.

A: Disease:   When an organism’s body system does not work properly or any organ affects by viruses,…

Q: Explain why viral infections are difficult to treat.

A: The virus is a non-living entity. It is the source of a variety of infections. The infection host…

Q: An infection that spreads from a local site to other tissues is known as a a. mixed infection. b.…

A: An infection is the invasion and multiplication of microorganisms like bacteria, viruses, and…

Q: Why would medication fail to cure HSV infections even though it prevents recurrent cold sores?

A: Herpes affected individuals are generally asymptomatic or show painful blisters and ulcers. HSV…

Q: a. Describe the life cycle and host range of Toxoplasma gondii.b. How are humans infected?c. What…

A: Toxoplasma gondii is a unicellular eukaryote that acts as obligate intracellular parasite in many…

Q: Describe the signs/symptoms of a localized infection and those of a systemic infection ?

A: Infection is the colonization of the host by infectious agents. Infection is caused due to bacteria,…

Q: List in order the chain of infection and give a brief description of each.

A: In both basic and applied research, microbiology is a highly significant area. Proteomics, genomics,…

Q: Explain how the body (including cells, organs, organ systems) is affected by the bacteria Neisseria…

A: The gram-negative bacteria which cause the disease meningitis is called Neisseria meningitides. The…

Q: What would cause a local infection to spread into a pandemic so rapidly?

A: A pandemic is a global epidemic. An epidemic is when an infectious disease is widespread in a…

Q: What is a lytic viral infection?

A: A bacteriophage, additionally referred to casually as a phage, is a virus that taints and recreates…

Q: Describe the mechanisms pathogens use to penetrate the skin and mucous membranes.

A: Ans: Pathogens: The microorganisms which break the barrier of the human bodies immune system and…

Q: what is the virus transmission of smallpox?

A: Smallpox is an acute contagious disease caused by the variola virus. Fever and progressive skin…

Q: Which pathogen is most likely to be treated with antibiotics?

A: Antibiotics are a particular type of medicine that helps stop infections caused by bacteria. They…

Q: What is incubation period of a disease? What are the factors that affect the length of incubation…

A: The common history of an untreated transferable illness has four phases: phase of presentation,…

Q: Which of the following statements reflects the pathogenesis of influenza virus? A-The virus…

A: Influenza virus attacks on the respiratory system of human beings. It belongs to the family…

Q: Name and describe two substances in wounds to which pathogens attach.

A: When a pathogen invades the body lymphocytes are capable of producing antibodies. These antibodies…

Q: Why are there so many deaths from influenza when it is generally a mild disease?

A: Influenza or more commonly known as flu is caused mostly by the Influenza A virus. The symptoms of…

Q: At what body sites do pathogens typically attach and colonize?

A: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or…

Q: In both C. difficile–associated disease and bacterial vaginosis, the disease begins when the normal…

A: Intestinal microflora act as a primary line of defense against exogenous microbe invasion, and thus…

Q: How long does penicillin take to kill infection?

A: Penicillin is a type of antibiotics and they are used to treat bacterial infections. They kill or…

Q: If an outbreak of yellow fever occurred, who wouldbe isolated and who would be quarantined?

A: Introduction  Yellow fever is one of the common viral infection caused by Flavivirus. This is…

Q: indicate that a. the pathogen remains on the skin b. the body is responding to an infection. c. a…

A: Introduction  A pathogen is an organism that causes disease. Pathogens may spread disease once they…

Q: Explain clearly why a bacterial infection typically proceeds more slowly than a viral infection?

A: A virus infection could be a proliferation of a harmful virus within your body. Viruses cannot…

Q: What is the mechanism of pathogenicity for the Norovirus? Explain

A: Human noroviruses in the family Caliciviridae are a major cause of epidemic gastroenteritis.…

Q: Explain why antibacterial drugs are not effective againstvirus infections.

A: Antibacterial drugs are drugs that are designed to kill the pathogenic bacteria and the infected…

Q: In this case, bacteria were introduced to the patient’s muscles through an injection. How else might…

A: The infection of bone and muscles are relatively rare because they are present deep inside the body.…

Q: differentiate  between a viral infection and a bacterial infection?

A: Living organisms that are not visible to human eye but can be observed under a suitable microscope…

Q: What is the most effective antibiotic used to treat a UTI?

A: UTI stands for urinary tract infection. It occurs when bacteria manage to get into the urine and…

Q: How long does it take to develop symptoms of influenza after being exposed?

A: Influenza is a viral disease caused by influenza viruses specifically influenza A and influenza B.…

Q: What are the three things required for an infection to occur? Give an example of each.

A: Under favorable circumstances, pathogenic organisms can gain access into body systems to cause a…

Q: What or where is / are  the Preferred site(s) of infection for the Norovirus, and what is the…

A: Noroviruses are thought to be the most common cause of acute gastroenteritis like diarrhea and…

Q: What is the virus transmission of Cytomegalovirus?

A: Cytomegalovirus (CMV) is a virus that belongs to Herpesviridae family. It is found worldwide and…

Pathogenicity

Infection and Transmission

The infections are generated by the pathogenic organisms present in the environment. They maintain the capacity to invade a host body and establish colonies. A disease caused by such infectious agents is called a communicable disease or transmissible disease. These diseases spread through diverse means including blood, food, water, air, or vectors.