Respiratory Viruses

What are viruses

viruses require living cells for growth and replication. they either replicate with dna and rna, not both.

How do we detect viraal infections

detect the virus itself and detect the immune response (the antibodies against the virus)

What are we using to detect the immune response and see the antibodies against the virus

indirect elisa

Detection in clinical specimen (2 ways)

by electron microscopy, and cell culture

Detection of patients immune response

antibodies detection, present or absent (immunity test)

rise in antibody titre (diagnostic test)

respiratory viruses

influenza virus

parainfluenza virus

covid virus

rhinovirus

respiratory syncital virus

Influenza virus two types

type a (major epidemic)

type b (mild disease)

What does influenza virus produce

produce haemegglutinin

What happens when one gets influenza virus

fever, respiratory symptoms

Who most likely gets affected by influenza

infants and elderly

How does one get diagnosed of influenza

throat washing

What is the prevention of influenza

annual vaccination

Who does parainfluenza virus affect

infants and young children

What are the symptoms of parainfluenza

croup (high pitched cough)

Does parainfluenza have a vaccine

no

Respiratory synecital virus

major respiratory pathogen for 2 years and younger

symptoms of respiratory synectical virus

pneumonia and bronchioloitis

What is the prevention of respiratory synecytical virus

it has an antiviral vaccine called ribavizine

Rhinovirus

• common cold

  • 100 serotypes; no cross immunity

Coronavirus

RNA virus

• member of the corovaviridae family

what causes covid 19

SARS- Cov-2