In Europe, for several centuries, measles has been a childhood infection that rarely kills. When European settlers came to the New World, however, the measles virus they brought with them killed a large portion of native populations. Explain.

Q: Which mosquito is the carrier of Zika virus?

A: Zika virus is a mosquito-borne flavivirus that was first identified in monkeys in Uganda in 1947. In…

Q: Which of the following is characteristic of the lytic cycle? a) The virus-host relationship usually…

A: Introduction: A bacteriophage is a virus that infects bacteria and archaea and replicates within…

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: The Ro of Ebola has been estimated to be somewhere between 1.5 and 2. See graphic below. The number…

A: Transmission of Ebola virus to new continent.

Q: What lessons do early plague pandemics offer us for today? (The majority of this essay should…

A: The first step in understanding the lessons from early plague pandemics is to understand their…

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: You compared epidemiological data from two different outbreaks. You found that the outbreak caused…

A: Viruses are very small particles that cannot be seen by the naked eyes but they have a very high…

Q: Through the example of the H5N1 virus, explain how diseases are fast spreading due to globalization…

A: Introduction We will answer the question in below step

Q: Which statement about Yersinia pestis is false?a) Conditions inside human phagocytes activate…

A: Yersinia pestis is a non-motile, rod-shaped, Gram-negative bacterium that do not consists of spores.…

Q: Why does the Ebola virus generate such severe symptoms in a human host? (Hint: What is the…

A: virus were some of the first replicating systems . they have evolved many times and have become more…

Q: In the United States, hantavirusesa) are limited to southwestern states.b) are carried only by deer…

A: A virus is an infectious agent that contains a single nucleic acid (RNA or DNA) core surrounded by a…

Q: and efficacy data for a vaccine that is greatly needed in this region." In Africa, there have been…

A: Malaria is a disease caused by the parasites and transmitted by the mosquitoes bite.This disease…

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 do influenza virus and Ebola virus have in common?In what ways do their modes of transmission…

A: Ebola Virus: It is a Virus that causes a deadly and rare disease called Ebola that causes severe…

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: Creutzfeldt-Jakob disease:(a) Is a form of meningitis(b) Is slow to develop with a long period of…

A: Answer: Introduction: Creutzfeldt-Jakob disease may take place naturally, be inherited or prion…

Q: Tuberculosis continues to be a serious health concern in many parts of the world. A) true B) false

A: An airborne infection that mainly affects the lungs, tuberculosis (TB) is contagious. Your brain and…

Q: Explain why influenza continues to be a common infectionin North America.

A: Influenza is referred to as a viral infection that can be deadly in severe cases. This influenza…

Q: A viral particle adsorbs onto a host cell membrane. It uncoats and releases its single-stranded…

A: Viruses are differing entities that can be classified based on their nucleic acid type, replication…

Q: Make a simple drawing of the functions of toll-like receptors.

A: Toll-like receptors (TLR) are a family of transmembrane receptors that serve as signaling receptors…

Q: Imagine a newly developed drug that is highly lethal against all stages in the life cycle of…

A: Step1- Toxoplasma gondii an obligate intracellular parasitic protozoan eukaryote (specifically an…

Q: Body licea) can act as a vector to transmit disease.b) seldom spread from person to person.c) have…

A: Answer is b.) seldom spread from person to person.

Q: what type of agent is the Variola virus? BSL...

A: Any infectious agent or microorganism (Virus, bacterium, protozoa, ETC) that can cause disease is a…

Q: Even though genetically engineered mosquitoes might be developed that do not allow the reproduction…

A: Genetic engineering' is based on the recombinant DNA (deoxyribonucleic acid) technology, the…

Q: What is the basic structure of the HIV virus? What is the function of the glycoproteins of its…

A: We have to explain What is the basic structure of the HIV virus? And What is the function of 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: It is said,that disease are spreading faster due to globalisation and increased movement of…

A: The disease is caused by pathogens. Pathogens are disease-causing organisms. There are two types of…

Q: From an epidemiological perspective, why are most arthropod-borne viral diseases hard to control?

A: Arthropods are able to serve as vectors, suggesting that they play a significant role in the…

Q: Over time, how does a virus normally become more able to to infect a host organism and be…

A: Answer  a) mutations

Q: lthough Lilly’'s project was focused on understanding the prevalence of resistance strains of M.…

A: Mycobacterium tuberculosis is a bacteria which is responsible for causing respiratory disease in the…

Q: Cytomegaloviruses are a widespread and diverse group of:(a) Cytoviruses (b) Retroviruses(c)…

A: A virus is a very small submicroscopic agent that is known for causing infections in its host…

Q: Herpes Simplex Virus 1

A: Herpes simplex virus is a common virus that causes infections of the skin and mucous membranes. It…

Q: Why was the Ebola outbreak “the perfect storm”?  A. Public health officials were not particularly…

A: Outbreak is defined as the sudden increased occurrence of disease cases or increased disease…

Q: n December 2019, a family in Asia detected signs and symptoms of pneumonia. Laboratory diagnosis…

A: Disease is any disorder of the structure or function of either an organ or the whole organ system…

Q: Using evidence from the text, what factors influenced the survival of humans during the bubonic…

A: Bubonic plague is a type of plague that affects the lymph nodes and results in swelling. This type…

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: 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: On 17 August 2022, the Ministry of Health of the Democratic Republic of Congo (DRC) reported a…

A: It is well recognized that the Ebola virus (EBOV), a public health emergency of worldwide concern,…

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.