Infectious Diseases Overview
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Questions and Answers

What is a common complication associated with measles?

  • Diarrhea
  • Hearing loss
  • Kidney failure
  • Pneumonia (correct)

Which statement accurately describes the mumps virus?

  • Infection always presents with symptoms.
  • There is a specific treatment available for mumps.
  • It can cause deafness in both ears.
  • Recovery from mumps is typically complete. (correct)

How is the Marburg virus primarily spread among humans?

  • Contaminated body fluids (correct)
  • Airborne respiratory droplets
  • Direct contact with infected animals
  • Contaminated food and water

What is the function of oseltamivir in influenza treatment?

<p>It inhibits neuraminidase activity. (C)</p> Signup and view all the answers

What is a major limitation of the influenza vaccine?

<p>It protects only against strains included in the vaccine. (D)</p> Signup and view all the answers

What is the primary method of transmission for Rhinoviruses?

<p>Direct person-to-person contact (B)</p> Signup and view all the answers

Which of the following is true regarding the Inactivated Polio Vaccine (IPV)?

<p>It is effective, inexpensive, and stable during transport. (B)</p> Signup and view all the answers

What is a characteristic symptom of Dengue Fever during the second phase of infection?

<p>Bright rash and return of fever (B)</p> Signup and view all the answers

How is polio mainly transmitted?

<p>By direct contact or contaminated food and water (B)</p> Signup and view all the answers

What condition may occur following reinfection with Dengue Fever?

<p>Dengue Hemorrhagic Fever (B)</p> Signup and view all the answers

Which vaccine can induce herd immunity?

<p>Oral Polio Vaccine (OPV) (A)</p> Signup and view all the answers

What is a potential complication of rubella infection in pregnant women?

<p>Congenital defects like blindness (B)</p> Signup and view all the answers

What is a common result of mumps infection?

<p>Painful enlargement of the parotid salivary glands (A)</p> Signup and view all the answers

Flashcards

Rhinovirus diseases

Common colds caused by rhinoviruses, limited to the upper respiratory tract, transmitted by contact and aerosols.

Polio transmission

Polio is transmitted person-to-person or via contaminated food/water.

Polio vaccines (difference)

IPV (inactivated) is safe, stable, and effective; OPV (oral) induces immunity like natural infection but carries a risk of reversion to live virus.

Postpolio syndrome

A worsening of polio symptoms affecting muscles later in life.

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Dengue Fever characteristics

A viral disease transmitted by mosquitoes; causing fever, pain, edema, and potentially hemorrhagic fever.

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Yellow Fever vector

Yellow fever is spread by Aedes mosquitoes.

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Rubella infections (effect on children and pregnant women)

Usually mild in children; but can cause birth defects in pregnant women, like blindness and deafness.

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Mumps Symptoms

Mumps causes swelling of the salivary glands (parotitis).

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Measles Transmission

Spread through air via respiratory droplets. Virus infects respiratory tract, then spreads throughout the body.

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Measles Symptoms

Koplik's spots on the mouth; lesions appear on the head and spread. Can lead to rare complications like pneumonia.

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Influenza Treatment

Drugs (oseltamivir or zanamivir) inhibit neuraminidase to help treat the virus.

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Influenza Prevention

Immunization with multivalent vaccines are protective against specific strains of influenzavirus types. Vaccines protect only against included strains.

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Study Notes

Rhinoviruses

  • Cause most colds, affecting the upper respiratory tract
  • Spread via aerosols, fomites, or direct contact
  • People develop immunity to specific serotypes
  • Immunity decreases with age

Polio

  • Spread through person-to-person contact or contaminated food/water
  • Two types of vaccines:
    • Inactivated Polio Vaccine (IPV): Effective, inexpensive, and stable; no risk of vaccine-related disease
    • Oral Polio Vaccine (OPV): Mimics natural infection, easy administration, and can generate herd immunity; risk of vaccine-related disease
  • Postpolio syndrome: Deterioration of polio-affected muscles

Dengue Fever

  • Flavivirus transmitted by mosquitoes
  • Initial symptoms: Fever, weakness, edema, and severe pain
  • Second phase: Rash and return of fever
  • Dengue hemorrhagic fever: Reinfection can lead to internal bleeding, shock, and potentially death
  • No treatment is currently available

Yellow Fever

  • Spread by Aedes mosquitoes
  • Natural hosts are monkeys and humans
  • Symptoms: Hepatitis, hemorrhagic fever, and shock

Rubella

  • Infection starts in the respiratory system, spreading throughout the body
  • Characterized by a rash of flat, pink to red spots
  • Usually not serious in children
  • Can lead to arthritis/encephalitis in adults
  • Pregnant women can transmit it to their offspring. Leading to birth defects.
  • Vaccination can reduce spread and severity

Mumps

  • Virus infects the upper respiratory system, spreading to other organs
  • Results in painful swelling of the salivary glands.
  • Other associated complications include orchitis, meningitis, pancreatitis, and deafness
  • Vaccination has almost eliminated mumps in industrialized countries

Measles

  • Spread through respiratory droplets
  • Initial symptoms are Koplik's spots in the mouth, followed by a rash
  • Potential complications include pneumonia, encephalitis, and subacute sclerosing panencephalitis (SSPE)
  • Vaccination has eliminated endemic measles in the US

Rubella, Marburg, and other Hemorrhagic Fevers

  • Rubella is a virus spread by respiratory secretions.
  • Marburg and Ebola are hemorrhagic fevers, caused by viruses.
  • Fruit bats are a likely natural reservoir.
  • Transmission to humans is unknown in some cases

Influenza

  • Signs and symptoms include fever, malaise, headache, and myalgia
  • Involves the respiratory system
  • Incubation period is roughly one day
  • Treatment includes antiviral drugs
  • Prevention includes vaccination

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Description

Explore the key concepts of infectious diseases such as rhinoviruses, polio, dengue fever, and yellow fever. This quiz covers their transmission modes, symptoms, vaccines, and immunity issues. Test your knowledge on these significant health topics!

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