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

Q: SARS is a disease that appeared in 2003 with epidemic features in the province of Guangdong, in east…

A: SARS is transmitted from an animal to other animals and humans. The epidemic affected around 26…

Q: Is Haemophilus influenzae a virus or bacteria?

A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under…

Q: Which disease has an environmental reservoir (i.e., soil, water)? A) O pneumonia B) O rabies C) O…

A: Natural reservoirs are a specific population or environment of the organism that act as reservoirs…

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: Why did the 1918 influenza affect mostly the young and healthy?

A: VIRUS:- Influenza A virus subtype H1N1, the outbreak which it has caused are the 2009 swine flu…

Q: Why is mononucleosis a disease primarily of college-age Americans?

A: A disease is a state of unhealthiness of the physical body, mind and social interaction. A disease…

Q: Why are infectious diseases more common in developing nations than in the United States today?

A: According to the data provided by the World Health Organization, there is a lower level of mortality…

Q: Why is Lyme disease considered a re-emerging disease?

A: INTRODUCTION Lyme disease is an infectious disease caused by Borrelia bacteria, which are spread by…

Q: Which of the following statements is false?a) A botulism epidemic that results from improperly…

A: An illness of high rate implies that individuals frequently contract the infection; guests to a…

Q: All of the following are thought to contribute to the emergence of disease excepta) advances in…

A: The answer to the above question is option e i.e. widespread vaccination programs .  These vaccines…

Q: Most U.S cases of tularemia occur in the late spring and summer months, and a few cases occur in…

A: Tularemia is a zoonotic infection brought about by the gram-negative coccobacillus Francisella…

Q: Respiratory syncytial virusa) is a leading cause of serious lower respiratory tract infections in…

A: Viruses are extremely small organisms that either has RNA or DNA as their genetic code and are…

Q: What genetic differences make some individuals more and some less susceptible to malaria ?

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: Why do patients with XLA tend to contract infections associated withbacteria, more than viral…

A: Microorganisms or microbes are creatures that are only visible under the microscope. Various…

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: Why do you think tuberculosis is still a relevant and fast- growing disease in the whole wide world?

A: Tuberculosis is a major problem in the world's poorest countries. There is growing resistance to…

Q: Which of the following are hosts of West Nile virus which are also responsible for infecting…

A: The illness caused by micro-organisms like bacteria, parasites, fungi and acellular organisms like…

Q: Can you suggest some possible explanations for the patterns of influenza epidemics in temperate…

A: Experiments in guinea pigs exhibited that flu infection transmission is firmly regulated by…

Q: If you and your family all develop infectious diarrhea, the most likely portal of entry for the…

A: Pathogens are the organisms that are capable of disrupting the normal physiological balance of an…

Q: What are two ways that the pandemic has affected the mental health of children?

A: The complex array of challenges brought by the COVID 19 pandemic includes mental health…

Q: Why are emboli dangerous?

A: Introduction Platelets are also referred to as thrombocytes; they are cytoplasmic fragments that…

Q: What is the cause of malaria? Why does the presence of sickle cell trait confer resistance to some…

A: Malaria is caused by Plasmodium vivax or Plasmodium falciparum. The organism completes its life…

Q: Are there any similarities between infectious and chronic diseases

A: Introduction: Infectious diseases are  caused by organisms — includes bacteria, viruses and…

Q: H1N1 infl uenza has been the cause of four pandemics in recent history: 1918, 1957, 1968, and 2009.…

A: A virus is a biological particle that infects the host by entering it and then reproducing inside it…

Q: Show a diagram showing the process of Mycobacterium tuberculosis on a cellular level

A: Mycobacterium tuberculosis is the bacteria that leads to tuberculosis (TB), a bacterial illness.…

Q: Why do you think there are no longer polio cases in the US, but there are some cases of influenza?

A: Vaccination is an activity during which an inactivated or killed pathogen is administered to a…

Q: Which term would b een, yet occasional O 1) endemic O 2) sporadic

A: A condition of the bacterial disease marked by rigidity and spasms of the voluntary muscles,…

Q: How much time does it take for a flu pandemic to infect people all around the world?

A: A disease, which occurs worldwide crossing all the international natural and man-made boundaries is…

Q: Explain about Haemophilus influenzae ?

A: Haemophilus influenzae causes different types of bacterial infections.This bacteria may cause mild…

Q: Betty, who is 25 years of age, has been diagnosed with Raynaud phenomenon. She has been a snow skier…

A: KEY WORDS:- Raynaud Phenomenon  - It is the situation in which hands and feet of individual who…

Q: Klebsiella Pneumoniae produces a capsule: How does klebsiella pneumonia contribute to the virulence…

A: Studies have recognised three factors that may mediate virulence: cell wall receptors, capsular…

Q: Why is it important to take medicine like vitamin c, zinc, and rosehip oil in this time of the…

A: Healthy diet It includes balanced diet, and contains different types of nutrition such as,…

Q: Why is Zika virus disease considered dangerous even though itrarely kills?

A: The Zika virus is a single-stranded ribonucleic acid (RNA) virus that belongs to the Flaviviridae…

Q: The standard response to an outbreak of avian influenza consists offive steps: (1) Quarantine, (2)…

A: Avian influenza is the disease caused by infection with avian influenza Type A viruses. Avian…

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…

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.