Which of the following statements reflects the pathogenesis of influenza virus? A-The virus frequently establishes persistent infections in the lung B-Viremia is common C-The virus enters the host in airborne droplets D-Viral infection does not kill cells in the respiratory tract E-Pneumonia is not associated with secondary bacterial infections

Q: All of the following are emerging infectious diseases excepta) smallpox.b) hepatitis C.c) Lyme…

A: Answer is a.)  smallpox.

Q: Which type of virus is shown here? head -capsid - viral DNA -sheath tail tobacco mosaic virus HIV…

A: Viruses are microscopic acellular organisms that form an intermediate group between living and non…

Q: Which of the following viruses causes chronic persistent infections? a. hepatitis B c. parvovirus b.…

A: Virus, irresistible specialist of little size and straightforward structure that can duplicate just…

Q: Which of the following is true of an infectious disease? they can be spread from one host to another…

A: Disease is a specific abnormal condition that negatively affects the structure or function of an…

Q: Which two viruses mainly infect the lower respiratory tract? A.Rhinovirus and influenza virus…

A:

Q: The first pandemic since 1968, which struck in 2009, turned out to be H1N1, a milder strain of which…

A: Virus is defined as the smallest microscopic agents that has the capability to replicate only within…

Q: Which of the following is not a DNA virus?(a) Adenovirus (d) Herpesvirus(b) Poxvirus (e)…

A: The small microscopic and unicellular organisms are called microorganisms. There are many types of…

Q: Infections with __________ virus cause the development ofmultinucleate giant cells.a. rabies b.…

A: Some viruses are able to induce fusion of cells and live within them, thereby avoiding the immune…

Q: What is a virus pandemic? a) A sharp and rapid epidemic involving more than one country b) An…

A: The influence of virus and its infection depends on the geographical areas on which it spreads, food…

Q: Which of the following are not DNA viruses?a) Hepatitis B virusb) Influenza A virusc) CMV virusd)…

A: Viruses have diversity in terms of the structure, the method of replication, host and target cells.…

Q: Which of the following viruses requires a surrogate virusinfection in order to cause disease?(a)…

A: In efficacy testing, the chemical inactivation cannot be determined for all viruses, because some…

Q: obar pneumonia is caused by ___.      virus of unknown origin     any of a number of bacteria,…

A:

Q: a. During which stages of an infectious disease does the host exhibit signs and symptoms? Is there a…

A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…

Q: Compare and contrast the adenovirus and the SARS-CoV-2 virus that is causing our current pandemic.…

A: Adenovirus also known as Influenza virus is responsible for causing "flu". The SARS-CoV-2 virus is…

Q: What is the form, habitat, nutrition, method of reproduction and size of virus

A: Viruses are sub-microscopic particles that can infect the cells of living organisms such as plants,…

Q: Because most pathogens cannot survive for extended peri-ods of time outside the body, they must…

A: An infectious agent that upon entry harms the body and causes the disease is called a pathogen. The…

Q: A man infected with a viral respiratory infection sneezes and releases tiny droplets containing…

A: INTRODUCTION Virus It is a microscopic infectious agent contain DNA or RNA as their genetic material…

Q: Name two noncellular infectious agents besides viruses.

A: There are some noncellular infectious agents. A virus is composed of a protein code and a genetic…

Q: For the Coronavirus. Describe its causation in terms of agent, host, and environment. Agent: What…

A: Coronavirus is a disease caused by SARS-CoV-2 virus. Person with Coronavirus have Respiratory…

Q: Human Herpes Viruses types 1 & 2( HHV-1, HHV-2 aka Herpes Simplex Viruses) most frequently causes…

A: Herpes simplex virus 1 and 2 (HSV-1 and HSV-2), also known by their taxonomic names Human…

Q: Which of the following processes occurs in both lytic and nonlytic viral infections?(i) Infected…

A: Statement (i) Infected cell ruptures to release viral particles is only limited to lytic cycle…

Q: Which of the following statements about noroviruses is false?a) They are the most common cause of…

A: Viruses are infectious agents that are non-cellular and composed of genetic material covered by a…

Q: infection mechanism

A: Viruses are submicroscopic infection agents that lack the capacity to live outside a host body. They…

Q: A seasonal outbreak of influenza would be an example of what type of outbreak? a. point-source b.…

A: Outbreak is a term used in epidemiology to describe a sudden surge in disease incidences in a…

Q: Which of the following is a true statement with regard to virusemia? O The second combining form…

A: A medical terminology is a  technical term that is used to represent a standardized language for…

Q: All viruses have which components in their infectious particles? Nucleic acids and protein coats…

A: Viruses are usually organisms with acellular structures outside their host. They enter their living…

Q: The primary site of attack in influenza is thea. small intestine b. respiratory epithelium c. skin…

A: Influenza or flu is a highly contagious viral infection of the lungs and the respiratory passages.…

Q: Which of the following statements correctly describes viruses? Select one: A. They can reproduce by…

A: Viruses are DNA or RNA containing and they are microscopic in nature. Usually they contain a…

Q: If an animal virus does not lyse the host cell and does not produce symptoms, it is best described…

A: A viral infection is the infection caused by virus particles inside the body. Depending on person’s…

Q: Classification of common viruses Viruses: Rabies viruses Herpes viruses Coronavirus H1N1 viruses…

A: We don't provide references. Viruses are tiny non-cellular creatures made up of genetic material and…

Q: Which virus has a genome that can be directly translated in the host cytoplasm after entry??…

A: Viruses have diversity in terms of the structure, the method of replication, and host and target…

Q: Why can’t drugs used to treat influenza, like neuraminidase inhibitors, be used to treat a wider…

A: Influenza is a viral infection, also known as flu. It is caused by influenza virus.   Symptoms :…

Q: The types of host species a particular virus can infect are referred to as its (a) assembly (b)…

A: Viruses are simple, noncellular infectious microorganisms with DNA or RNA surrounded by the coat…

Q: Polio and hepatitis A viruses are ___________ viruses.a. arbo b. enteric c. cold d. syncytial

A: The virus is microscopic and is even smaller than bacteria. they remain inactive or in the form of…

Q: Which of the following is not caused by a poxvirus?a. molluscum contagiosum b. smallpox c. cowpox d.…

A: Poxviruses are oval or brick-shaped viruses that consist of DNA double-stranded large genomes. This…

Q: What is an inclusion body? Why is it important in the diagnosis of viral infections? For example,…

A: When a virus or any other disease-causing agent enters into a host cell such as a bacterial cell or…

Q: In the virus image below, what is the likely function of the projections seen on the virus particle?…

A: Viruses are tiny nucleic acid units containing either DNA or RNA as their genetic material and…

Q: Viral infections can be either lysogenic and lytic, explain the differences between the two viral…

A: Introduction :  Viruses are submicroscopic organisms and they cause infections in a wide range of…

Q: Which organism listed below can undergo blebbing O S. aureus O N. meningitidis O H. influenza O S.…

A: The outer membrane (OM) of gram-negative bacterial species is complex and based on external…

Q: Which among the following is caused by a non enveloped viruses? a. Chicken pox b. mumps c.…

A: Viruses are obligate parasites that are smaller than bacteria. Each virus is made up of nucleic acid…

Q: In recent history we have been fairly successful in eradicating or substantially diminishing the…

A: Eradication refers to the global incidence of infection caused by a certain agent permanently…

Q: A patient presents at the clinic with an acute viral infection. Assays that analyze the viral life…

A: Viruses are not living cells, viruses are packs of genetic materials enclosed within a protein coat.…

Q: Fill in the table. An example below is attached as a guide.  Disease: Influenza A Microorganism:…

A: Influenza  It is a viral infection that is caused by the influenza virus. It is commonly called flu…

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: Define the following terms: a. virus b. virion c. capsid d. retrovirus e. enveloped virus

A: Introduction: Pathogens are the organisms that cause disease. Different types of pathogens are…

Q: According to Baltimore classification, which among the followi pairs is mismatched O Hapatitis B…

A: Baltimore classification is used for classifying viruses based on the their ability to synthesize…

Virus

Viruses are infectious microscopic agents that can only reproduce in live cells of animals, plants, or microbes and are smaller than bacteria. Vertebrates, invertebrates, plants, protists, and fungi are among their many hosts. Viruses are unable to multiply on their own due to the lack of necessary cellular machinery, but they can guide the cell machinery of a host to make additional viruses by infection. The virus enters and attaches to a particular host cell, injects its genetic material, and reproduces by using the host’s genetic material. Viruses cause infection by taking entry into the host cell and using the host cell’s enzymes and raw materials to multiply.