Distinguish among sylvatic, bubonic, septicemic, andpneumonic plague

Q: List Koch's postulates and describe how this list supports the Germ Therory of Disease.

A: There are four postulates given by Robert Koch that allow the determination of causative microbial…

Q: How is plague transmitted? Distinguish between bubonic and pneumonic plague.

A: Plague is basically an infectious disease, which is caused due to Yersinia pestis which is a…

Q: Describe how self infection and reinfestation occur in a child with a persistent pinworm infection

A: Pinworm disease also called as enterbiasis is a disease that is caused by the pinworms (Enterobius…

Q: Differentiate between amastigote, promastigote, epimastigote, and trypomastigote and indicate which…

A: Trypanosomes are the members of the group protozoa that are found to dwell on the blood and tissues…

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: Identify between vehicles and fomites and provide specific examples of each. What role does each…

A: Infectious agents such as germs and pathogens are likely to spread from one person to others. Many…

Q: Recall the etiologic agent of plague, and create a simple diagramof the infection cycle.

A: The plague was a well-feared disease in the past, causing pandemics that killed millions of people.…

Q: What are the arthropod vectors and animal hosts for typhus,spotted fever rickettsiosis,…

A: A vector is any agent which carries and transmits an infectious pathogen into another living…

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: Create a chart based on reservoirs modes of transmission and portals of entry. Please select 5…

A: Many infectious organisms need a reservoir, where they thrive and it is from this reservoir that…

Q: A patient 44 years has recently returned from Africa infected with malaria. His blood smear…

A: To test for malaria, the patient's blood smear is spread on a slide and stained to observe the…

Q: What are the similarities and differences between airborne and direct disease transmission? Discuss…

A: Airborne disease…

Q: Of the following, list those that are viral infections: cholera, rabies,plague, cold sores, whooping…

A: A viral infection is a result of the multiplication of a virus inside the body of the host. Viruses…

Q: Considering that CMV infects 50% of the adult population in the United States and 100% of the…

A: Viruses are microscopic agents that can replicate only inside the host cells. They can infect all…

Q: What are the vectors for malaria, dengue fever, plague flea, African sleeping sickness, Chagas’…

A: INTRODUCTION - Malaria disease is  caused by a plasmodium parasite, transmitted by the bite of…

Q: The following factors differentiate the two forms of relapsing fever EXCEPT A. Type of vector B.…

A: Introduction : There are a few important points : Any organism that causes a disease is a pathogen…

Q: All of the following are true of Legionnaires’ disease excepta) the causative organism can grow…

A: Protozoa include single-celled eukaryotes and can be free-living or parasitic. These feed on organic…

Q: List three factors that contribute to the emergence of infectious diseases.

A: The term "chain of infection" refers to the order in which the infection spreads. It starts with the…

Q: Contrast an Entamoeba and a Naegleria infection in terms oftissues infected and symptoms.

A: A parasite is an organism that lives on or inside the host. They get food either directly from host…

Q: Match the description to the specific type of transmission transplacental transfer of Treponema…

A: Pathogenic organisms need a way of transmission to enter the host and cause disease. There are…

Q: Gyraulus convexiusculus is the first intermediate host of: *

A: A host organism is an organism that harbours a parasite and supplies it with nutrients.

Q: What are the insect vector, the natural host reservoir, and thetreatment for plague?

A: Plague is a type of infectious disease which is caused by Yersinia pestis bacterium. Generally the…

Q: What caused the Bubonic plague pathogens to transmit to humans?

A: Bubonic plague is an infectious fever caused by the bacterium Yersinia pestis. The disease was…

Q: Explain in details epidemiology and the environmental factors that contribute to the spread of…

A: Epidemiology is the scientific and systematic study of the distribution and determinants of…

Q: Name the human pathogens within the genera Ehrlichia andAnaplasma and the diseases they cause.

A: Bacteria’s are the prokaryotic microorganisms which have incipient nucleus. Most of the bacteria are…

Q: Discuss the events that takes place during meat spoilage by Pseudomonas spp.

A: Contamination by Pseudomonas makes an important role in spoilage of meat and its derivatives. Due to…

Q: Explain the life style of vector (Dermacentor Andersoni- wood ticket taking into account male,…

A: Dermacentor andersoni is also reffered to as a "Rock Mountain wood" tick. It is a member or hard…

Q: Explain why malaria is a greater concern in some geographic areasthan in others.

A: An infectious disease that s known to cause by the mosquitoes and is able to infect humans, as well…

Q: Differentiate among the arthropod vectors of disease.

A: Vectors are the living carrier that carries pathogens to the host transmitting the disease. The…

Q: Which of the following are primarily zoonoses?a. tularemia b. salmonellosis c. shigellosis f.…

A: Pathogens are the organisms which upon entering in to the  host causes infectious diseases.…

Q: Complete the table. Bacteria (Causative Agent) Disease Symptoms Mode of Transmission Diagnosis…

A: Bacteria (Causative agent) Disease Symptoms Mode of transmission Diagnosis Treatment…

Q: Mention and Explain two (2) virulence factors of bacterial pathogens

A: Microorganisms develop or secrete some factors that can evoke pathogenicity in the host, called…

Q: In agriculture, what are the six steps involved in the disease cycle? Describe what occurs at each…

A: The series of events from the development of disease, which also includes stages of developmet of…

Q: Given below are the pathogens and the diseases caused by them. Which out of these pairs is not…

A: A pathogen or infectious agent is a biological agent that causes disease or illness to its host. A…

Q: Mycobacterium tuberculosis Geographic regions where the disease is prevalent . include interesting…

A: The process by which a disease spreads from one host to another is known as "transmission". Diseases…

Q: The causative agent of plague is:  Mutiple choice :  Yersinia pestis.   Vibrio cholerae.…

A: Plague is also called black death. The disease is transmitted between animals via their fleas and,…

Q: Compare subclinical infection and chronic infection.

A: We know that Infection is the result of foreign organism in the body. Infections are classified in…

Q: List and describe the four methods by which infection can be transferred from the source to the host

A: Infection is caused in our bodies by various pathogens. The pathogen enters the body and affects the…

Q: Humans are accidental hosts in many vector-borne diseases. Whatdoes this indicate about the…

A: The disease is a sickness or illness characterized by specific symptoms and signs. A disease that…

Q: Who is most at risk for contracting plague and why?

A: Infection is defined as the state of invasion on the body tissues of an organism, which is caused by…

Q: pick two mechanism of disease and briefly describe them

A: The disease can be considered to be a disorder that results in improper function of the host…

Q: Give an example to source of infection : 1. animal (zoonotic) 2. insect 3. soil

A: Parasitology is the examination of parasites, their hosts, and the correlation among them. As a…

Q: briefly define the following: 1. droplet transmission 2. vector-borne transmission 3. nosocomial…

A: Transmission:  Transmission is defined as the transfer of a pathogen that causes communicable…

Q: Explain the transmission of dengue from human to mosquitoes and its causes

A: Mosquitoes are mostly vectors of pathogens. They carry with them pathogen from one animal to…

Q: koch postulate can be applied by explaining linkages between mycobacterium ulcerans and buruli…

A: Mycobacterium ulcerans a gram negative bacteria present in the environment is a causative agent for…