North America in 1999. It is commonly spreac by mosquitoes which become carriers after feeding on infected birds. Most people who are infected do not develop any signs or symptoms. About 1 in 5 people will develop a fever and complain of headache, joint pains, or a rash. Less than 1% of patients develop inflammation of the hrain which can load
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- The Ebola virus is a zoonotic virus, which means that it can spread from animals to humans. Once a person is infected, the virus affects multiple organ systems in the body. Infected cells can attach themselves to blood vessels, causing uncontrollable internal bleeding in some patients, accompanied by high fever—a condition known as hemorrhagic fever. Other common symptoms include liver and kidney failure, vomiting, and diarrhea. On average, 50% of people that contract Ebola die from the disease, though the fatality rates of past outbreaks have varied from 25% to 90%. Scientists isolate virus RNA from blood samples and then convert the RNA to DNA. Using DNA sequencing, they then compare virus sequences isolated from individuals in different locations and at different times in an outbreak. By identifying differences in the viral genomes, scientists can reconstruct the history of how the virus spreads and mutates. Tracking mutations over time can also reveal whether the virus is…Which are true about tick-borne bacterial diseases? Select which true O One example is the West Nile Virus One example is Lyme disease O The tick is considered a vector O The tick gets sick when infected with Borrelia burgdorferi O One example is Rocky Mountain Spotted Fever One example is Hantavirus Pulmonary Syndrome One example is Chikungunya O Some tick-borne diseases can cause severe illness in humansThe reason that influenza infection is more dangerous than the common cold is because ___. the antigen of the cold microbe mutates but influenza antigen remains constant the flu can infect the lungs, the cold rarely infects any deeper than the trachea influenza has a food borne route of infection, while the cold has a direct contact route flu cannot be controlled by antibiotics but the cold can be
- The first pandemic since 1968, which struck in 2009, turned out to be H1N1, a milder strain of which of the following? A. Swine flu B. Bird flu C. Ebola virus D. HIVWhich of the following disease is non-communicable in nature?A. Cholera B. Chicken-pox C. Tuberculosis D. CancerWhich of these statements concerning Creutzfeldt-Jakob disease(CJD) and vCJD is true?a) CJD occurs in children; vCJD occurs in adults over 45.b) CJD and vCJD are fatal in under 50% of cases.c) CJD is caused by prions; vCJD is a viral infection.d) Only humans suffer from diseases like CJD and vCJD.e) Both CJD and vCJD produce a spongy appearance in affected brain tissue.
- Which are true regarding tick-borne bacterial diseases? Select all that apply. - One example is the West Nile Virus - One example is Lyme disease -The tick is considered a vector -The tick gets sick when infected with Borrelia burgdorferi -One example is Rocky Mountain Spotted Fever -One example is Hantavirus Pulmonary Syndrome - One example is Chikungunya I Some tick-borne diseases can cause severe illness in humansWhich of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. RhinovirusRabies is a disease that can be transmitted between humans and animals. describe at least two human activities that potentially contribute to increased transmission of the Rabies. what the link is between human activity and virus transmission. Are there any specific actions we can take to reduce the risk of disease transmission, either as individuals or through governmental actions/regulations?
- Which of the following best explains why vaccination of humans against rabies can be delayed until after exposure to a potential source of infection? A) Antibody responses are more rapid than those against other viruses B) T lymphocyte responses are more rapid than those against other viruses C) The virus does not infect any cells for several weeks or months D) The virus does not reach i target organ for several weeks or monthsWhich of the following is not a DNA virus?(a) Adenovirus (d) Herpesvirus(b) Poxvirus (e) Orthomyxovirus(c) PapovavirusThe dreaded virus which, on reaching the central nervous system, produces spasms of the muscles of the throat and the cheat while swallowing, and is sure to kill the patient is (a) Poliomyelitis virus (b) AIDS virus (c) Smallpox virus (d) Rabies virus