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URespiratory- Blue
Viral infections of the respiratory tract, upper respiratory tract 1/4/13
Question | Answer |
---|---|
Major Upper Respiratory Tract illnesses | Common cold, sinusitis, otitis media, pharyngitis, laryngitis, conjunctivitis |
Number one Viral cause of common cold | Rhinovirus |
Number of Rhinovirus strains | Over 100 |
Immunity between strands of rhinovirus | No cross-protective immunity, short lived immunity (IgA) |
How is rhinovirus spread | Respiratory droplets, especially hands to face |
Most effective preventative measure for rhinovirus | hand washing |
Most frequent reason for misuse of antibiotics | Rhinovirus |
What is responsible for MOST symptoms in a common cold | Inflammatory mediators |
Inflammatory mediators in a common cold | Histamine, prostaglandins, kinins, cytokines |
Histamine causes | Dilation of blood vessels, nasal congestion and plasma exudate, activation of sneeze and cough reflexes |
Prostaglandins cause | Mucous gland secretions |
Kinins cause | Stimulation of pain nerve fibers (sore throat) |
Cytokines cause | Headache, fever, chills, shivers, muscle aches |
What does mucous color tell us about the difference between a viral and bacterial infection | Nothing |
Rhinovirus attachment site is found in a | Canyon on the virus surface |
Which antibody is responsible for recovery and immunity? | IgA |
Preventative value of Vit C and Zinc? | None |
Coronavirus characteristics | ssRNA and enveloped |
Cause of common cold AND SARS | Coronovirus |
Virus that can cause persistent infection and therefor prolonged infectivity | Adenovirus |
Pharyngoconjunctival fever is spread through | Swimming pools |
Diagnosis used for URTI | Detections of specific IgM, rise in IgG titer; isolation of virus from naso-pharyngeal, sputum and ocular secretions; PCR |
When are respiratory infections in children most common | Winter |
ARD was found commonly and is now vaccinated against in | Military recruits on bases |
ARD and Keratoconjuctivitis occur in | Epidemics |
How are URTIs transmitted | respiratory aerosols (cover your mouth!) |
Adenovirus can also be transmitted by | Fecal-oral (ewww) |
Treatment of URTI | Symptomatic only |