How is the timing of a propagated epidemic related to the incubation period of the pathogen?

Q: What event is required but not sufficient to cause an infectiousdisease?

A: An infectious disease is caused due to host invasion by biological agents. These biological agents…

Q: What are vectors ofparasites?

A: The most common vectors of the parasites are mosquito and ticks. mosquito transmit infection like…

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: Which phase of an infectious disease usually coincides with spread of the disease? Suppose an…

A: The five disease stages include the phases of incubation, prodromal stage, infection, which is…

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: What are blood born pathogens and how can it be prevented

A: Disease-causing microorganisms are pathogens.

Q: What is the difference between an endemic dis- ease and an epidemic?

A: Based on the prevelance of a particular disease we can classify them in different terms .

Q: Distinguish among sylvatic, bubonic, septicemic, andpneumonic plague

A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…

Q: What is the difference between a disease vehicle and a diseasevector?

A: A disease vector is any agent that carries and and helps in transmitting an infectious pathogen into…

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: Does EBV have a parasitic relationship with its host since it infects the host?

A: Parasitism is a type of interspecific relationship in which one, the parasite, is benefitted while…

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 are the types of transmissions diseases in a hospital and provide one example of each

A: A disease is an abnormal state of an organism that disrupts biological processes; it is…

Q: Differentiate between a definitive host and an intermediate host.

A: Characteristics of Protozoa are similar as animals. These protists are portable hunters or parasites…

Q: Why are diseases with long incubation periods more likely to result in an epidemic?

A: Incubation period is the time gap between exposure to a pathogen and onset of symptoms of a diseases…

Q: Which is a method of transmitting pathogens from one host to another by carrying microorganisms…

A: Regardless of the reservoir, transmission can occur for an infection to spread. First, transmission…

Q: What is a chronic and an infectious disease prevalent in the United States?

A: Chronic diseases are the one's who's condition lasts for year or more than a year, this may require…

Q: Distinguish between intermediate hosts and definitive hosts.

A: A host is an organism which gives space for a parasite to live in its body or on its outer surface.…

Q: How epidemiology contributes to controlling disease transmission?

A: Epidemiology is the study of science that deals with the diseases in a particular population. It…

Q: Why might a disease be endemic in one region, but not in another?

A: The condition of complete well-being of social, physical, and mental condition is termed as health.…

Q: Differentiate the following Epidemic Patterns a. Common-Source b. Propagated c. Mixed

A: Epidemiology: This is the branch of medical science. This branch deals with the study of health and…

Q: If transmission rate is 0.7 and recovery rate is 0.3, what is the basic reproductive number of this…

A: Vaccinations and Immunizations started in the 18th century, with the Smallpox Vaccination, created…

Q: Define Indirect spread of Disease? give 5 examples

A: Communicable disease Control and eradication of communicable disease is possible only through…

Q: How might climate change or increased global connectivity (such as international travel) affect the…

A: Shigella shigella bacteria causes shigellosis infection. It spread through contaminated food and…

Q: What are the types of transmissions Disease and provide one example of each

A: Disease Transmission means transfer of disease from one person to another person through various…

Q: How can the Kuru disease be managed and prevented?

A: Here we provide the ways to manage and prevent the kuru disease.

Q: corresponding

A: Vaccine effectiveness studies have conclusively demonstrated the benefit of covid 19vaccines in…

Q: Differentiate between common-source and propagated epidemics

A: Epidemic refers to a health emergency during which a particular type of disease develops in a…

Q: What causes the viral plaques that appear on a bacterial lawnto stop growing larger?

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

Q: What is the difference between a common source and a propagated source epidemic outbreak? Which…

A: Epidemiology is the method of investigation of cause of disease, its source, sign and symptoms.etc.…

Q: According to the natural history of disease model, the time before the precursors of disease and the…

A: A disease is any condition of malfunction of physical and mental wellness of a person which may be…

Q: Which of the following terms describes a disease that is caused by pathogens? * acquired infectious…

A: infectious diseases are caused by pathogens,which include bacteria,fungi,protozoa,worms,viruses and…

Q: what are the similarity and differences between a pandemic and an endemic

A: A pandemic is an epidemic that spread over multiple countries or continents to a greater geographic…

Q: Describe the conditions that favors epidemic.

A:

Q: What are those protruding parts on a pathogen called?

A: The protrusive structures present on the pathogen help in interaction with its host. Please  find…

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: What factors are important in the emergence or reemergenceof potential pathogens?

A: Answer: Introduction: Many factors contribute to the emergence and re-emergence of infectious…

Q: What is the preventive medicine in this pandemic era?

A: Preventive medicine is a medical specialty which focuses on the health of individual and…

Q: Explain the process of Quorum Sensing in coordinating the production of virulence factors in a host.

A: Quorum Sensing is a process of communication between two cells through which bacteria are able to…

Q: How did the human activities associated with the evolution of agriculture, domestication of…

A: Human beings are considered as one of the most skilled organisms .They are able to modulate the…

Q: What factors determine the outcome of most host-pathogen relationships?

A: On a cellular, molecular, organismal, or population level, the host-pathogen interaction is…

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: What is a pathogenicity island and how does one movebetween bacterial species?

A: Bacteria are unicellular prokaryotic microorganisms (nucleus is not enclosed in a nuclear membrane)…

Q: Why is H5N1 avian influenza considered a majorthreat to public health?

A: H5N1 is a type of influenza virus. They belong to the family Orthomyxoviridae, and they are…

Q: What is major difference between an endemic disease and an epidemic?

A: Answer: EPIDEMIC : It is the spread of disease within a population , region and a community. ENDEMIC…

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.