1. Describe why sometimes people that have survived a plague may be immune to it. What is the nature of this immunity? Can it be transferred to others? What is variolation? What is vaccination? What did Jenner do? What are the conditions or characteristics of a good vaccine? What is attenuation? How did Jenner get around attenuation? How did Louis Pasteur attenuate the rabies virus?

Q: What are some of the differences between the Moderna/Phizer vaccines and the Johnson & Johnson? Why…

A: A vaccination is a biological preparation that confers acquired immunity against a specific…

Q: 1. Why do people who are immunized sometimes still get the flu? 2. What do the letter A,H, and N…

A: Viruses cause many diseases in humans and other species. There are very few antiviral drugs are…

Q: Why does the author make sure to note that neither study "proved" that school closings decrease the…

A: The coronavirus, specifically referring to the ongoing pandemic, is caused by a novel coronavirus…

Q: How has infectious disease played an important role in human evolution? How have human cultural…

A: Infectious diseases have played a significant role in human evolution by acting as a powerful…

Q: How we can Prevent and Control of Rabies Virus?

A: The objective of this question is to understand the measures that can be taken to prevent and…

Q: e pool is unsanitary and causes virus to spread. What should the parents conclude? Choose the best…

A: On the basis of transmission, diseases can be classified into communicable and non-communicable…

Q: Why would vaccination be more likely to eradicate a viral disease than a bacterial disease? Why can…

A: The last case of Smallpox happened in 1977. Edward Jenner first introduced vaccine of Small pox.…

Q: Why can human infections pass so easily to gorillas compared to other species? How can we combat…

A: The reason why human infections can pass so easily to gorillas compared to other species is due to…

Q: Which statistic below is the best example of incidence of a disease? A) In 2005, 2 million…

A: Disease in a population is categorized as either prevalent or incident cases. When a person is…

Q: What are public health and vaccination considerations for anthrax and the plague?

A: Anthrax is an infection by bacteria, Bacillus anthracis, usually transmitted from animals. Anthrax…

Q: Here are three different methods that were used to protect people from smallpox: 1. Blowing…

A: The objective of the question is to understand how the immune system responds to different methods…

Q: What type of virus is most likely to be transmitted by vaccinationguns and acupuncture tools?

A: A virus is an infectious agent which need hosts body for its survival. It contains a single nucleic…

Q: Why might you expect an influenza epidemic to be more severe following an antigenic shift in the…

A: Influenza viruses are constantly changing and mutating. These changes are categorized as…

Q: Explain how each covid vaccine works and how health officials believe they will aid in the pandemic?…

A: Please Note:Hi! Thanks for your question. As you have posted multiple questions and have not…

Q: 1) Predict how the frequency of viruses with this deletion will change in the population over . Use…

A: Mutations arise as a natural by-product of infective agent replication.1 ribonucleic acid viruses…

Q: 1. What is a true pathogen and who does it typically infect? What is an opportunistic pathogen and…

A: True pathogens are capable of causing disease in healthy individuals with a functional immune…

Q: The first virus studied that led to the term "filterable virus" was rabies?

A: Filterable virus is a virus that is very tiny so that they can pass through a fine-pored filter like…

Q: 8. The rate at which a disease occurs in a population. 1. Morbidity Rate 2. Mortality Rate

A: DISCLAIMER : Since you have asked multiple question, we will solve the first question for you. If…

Q: Consider that the Herd Immunity Threshold is dependent on the reproduction number for an infectious…

A: Few important terms are as follows: Contagious disease : Disease that spread from one person to…

Q: viruses are not living, how come they adapt to their environment, replicate and cause infection? In…

A: Viruses contain a set of genes ( either DNA or RNA) enclosed in a protein coat called capsid and…

Q: An 83 year old patient has been ill the past couple of days with an upper respiratory infection. Her…

A: Nursing counselling and advise involves certain intervention which helps process focusing on the…

Q: What is the percentage of humans that are resistant to HIV? What makes them resistant?

A: HIV - is also known as Human immunodeficiency virus infection .

Q: Why do scientists worry more about new strains of viruses like influenza and coronviruses as…

A: Exposure to the herpes simplex virus  (HSV) causes herpes infection. It produces mouth sores and…

Q: 7. Name the causative organisms for four vaccine preventable diseases?

A: Vaccine-preventable diseases are illnesses caused by infectious agents such as bacteria or viruses…

Q: What other factors come into play with vaccination rollout other than just the development of the…

A: The process of administration of a vaccine to boost the immunity of the individual is called…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.