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Causative agent

- The causative agent of influenza is the influenza virus, which is a single-stranded RNA virus surrounded by a lipid envelope.

- The envelope contains two important glycoproteins: hemagglutinin (H) and neuraminidase (N). H binds to sialic acid receptors on host cells and facilitates viral entry. N cleaves sialic acid residues and enables viral release.

- The genome of the influenza virus consists of eight segments that encode for 11 proteins. The segments can be reassorted during viral replication or co-infection, leading to new strains.

- The influenza virus is sensitive to heat, acid, detergents, and disinfectants. It can survive for up to 48 hours on hard surfaces, up to 12 hours on cloth or paper, and up to 5 minutes on skin.

Questions on Causative agent

Correct Answer is D

Explanation

<p>This explanation is accurate. Influenza is transmitted through respiratory droplets generated by coughing or sneezing of an infected person. These droplets can be inhaled by individuals in close proximity, leading to infection. Proper hand hygiene and respiratory etiquette are essential to prevent the spread of influenza. <strong></strong></p>

Correct Answer is D

Explanation

This is the correct choice. Influenza is transmitted through respiratory droplets generated by coughing or sneezing. The droplets can travel a short distance and can be inhaled by individuals nearby, leading to infection.

Correct Answer is D

Explanation

Washing hands frequently with soap and water is an effective preventive measure for influenza. Influenza viruses can survive on surfaces for a limited time, and touching contaminated surfaces and then touching the face can lead to infection. Regular handwashing helps reduce the risk of transmission.

Correct Answer is ["B","C","D"]

Explanation

E is incorrect because individuals with a history of allergies are not considered a high-risk group for severe influenza complications. Allergies do not directly increase the risk of severe influenza outcomes.

Correct Answer is C

Explanation

People with weakened immune systems are indeed at risk of severe influenza complications. Individuals with weakened immune systems, such as the elderly, pregnant women, and those with certain medical conditions, are more susceptible to severe influenza symptoms and complications.

Correct Answer is D

Explanation

The rapid antigen test is a quick diagnostic test that detects specific proteins (antigens) on the surface of the influenza virus. It can provide results within 15-30 minutes, making it useful for rapid screening. However, it is less sensitive than PCR and may produce false-negative results in some cases. Despite this limitation, it is valuable in certain settings where immediate diagnosis is crucial for patient management and infection control.

Correct Answer is C

Explanation

Influenza vaccines do not contain live influenza viruses. The majority of influenza vaccines are inactivated or made from components of the virus, making it impossible for them to cause the flu in vaccinated individuals. Some vaccines, like the nasal spray, may contain weakened live viruses, but they are modified not to cause illness in healthy individuals.

Correct Answer is ["B","C","E"]

Explanation

<p>Implementing standard precautions and droplet precautions is crucial when caring for patients with suspected or confirmed influenza. Standard precautions include hand hygiene, wearing appropriate personal protective equipment, and following proper infection control protocols. Droplet precautions specifically address the transmission of respiratory droplets, which is a significant mode of influenza spread. </p>

The nurse should inform the client that the rapid antigen test is not suitable for confirming the diagnosis of influenza. While it can quickly identify some cases of influenza, it is not as reliable as other diagnostic methods like molecular tests (PCR) for confirming influenza. False-negative resul

The statement, "The influenza vaccine is not recommended for anyone aged 6 months and older," indicates the need for further education. Influenza vaccination is recommended for all individuals aged 6 months and older, especially those at higher risk for complications, such as older adults, young chi

Offering antibiotics for bacterial infection is not necessary for a patient with influenza. Influenza is caused by a virus, not bacteria, so antibiotics are ineffective against it. Antibiotics should only be prescribed if there is a secondary bacterial infection.

This is a correct choice. Dry cough is a common symptom of influenza. Influenza can cause irritation in the respiratory tract, leading to a dry cough.

"The incubation period of influenza is usually less than 24 hours." This is incorrect. The incubation period of influenza is longer than just a few hours; it typically takes a couple of days before symptoms appear.

The statement, "You need to take the antiviral medication only if you have a fever," is incorrect as well. Antiviral medications should be taken as prescribed by the healthcare provider, regardless of fever presence, to effectively treat influenza.

D is incorrect because the symptoms are not suggestive of allergies. Allergies typically present with different symptoms, such as sneezing, itching, and a runny or stuffy nose. The symptoms of fever, headache, and body aches are not characteristic of allergies.

Recommending the influenza vaccine for healthcare workers is a crucial prevention strategy. Vaccination is one of the most effective ways to protect healthcare workers and their patients from the influenza virus. By vaccinating healthcare workers, the risk of spreading the virus within the healthcar
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