Airborne Diseases Due To Viruses by Naveed Akhtar
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Transcript of Airborne Diseases Due To Viruses by Naveed Akhtar
1
GI Tract Functions
Airborne Diseases Due To Viruses
Presented To :- Sir. Shahroz Khan
Presented By :- Naveed Akhtar
Topic
What is an Air-Borne Disease
Airborne diseases are spread when droplets of pathogens are expelled into the air due to coughing, sneezing or talking.
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Chickenpox(Vericella)
Highly contagious skin disease
Primarily of children 2 to 7 years of age.
In USA 4 million died annually.
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Chickenpox(Vericella)
Causative agent is vecirella zooster.
Portal of entry is respiratory tract.
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Signs and symptoms
small vesicles erupt on the face
fill with pus, rupture, and become covered by scabs
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Treatment
Can be cured by vaccines (varicella vaccine)
Drug likeAcyclovir (Zovirax or Valtrex).
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Influenza
Respiratory disease
Caused by orthomyxovirus.
3 types based on antigen i.e A , B ,C.
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Influenza
Variation occurs in orthomyxo virus.
In china it is found in chicken & pigs.
Transferred to human as a cycle.
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Influenza
Ist epidemics in world was in 1580.
31 epidemics in various area of the world occurred.
The worst epidemics occur in 1981, 20 million people died.
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Influenza
Influenza ‘‘A’’ is much dangrous.
Sub types of ‘‘A’’ are H11N1 , H2N1 , H2N2.
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The number of known human pandemic deaths, are
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Name of pandemic Date Deaths
1889–1890 flu pandemic( Asiatic or Russian Flu)
1889–1890 1 million
1918 flu pandemic( Spanish flu)
1918–1920 20 to 100 million
Asian Flu 1957–1958 1 to 1.5 million
Hong Kong Flu 1968–1969 0.75 to 1 million
Russian flu 1977–1978 no accurate count
2009 flu pandemic 2009–2010 18,000
Symptoms
Cough and congestion Fever Headache Body Aches General malaise Sore throat
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Treatment
Antiviral drug (Amonotadine) , (Rimonotodine).
Zananivir
Osefloivir.
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Measles (Rubeola)
Rubeola: Latin word rubeus, red
Infection of the respiratory system.
Highly contagious and is spread by coughing and sneezing.
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Measles (Rubeola)
Causative agent is morbillivirus.
Potal of entry is respiratory tract & conjuctive of eyes.
Incubation period in 10 to 21 days.
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Signs and syptoms
First symptoms begin about the tenth day with:
Nasal discharge Cough Fever Headache Conjunctivitis.
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Treatment
No specific treatment is available for measles.
Measles vaccine (Attenuvax) or in combination (MMR vaccine; measles, mumps rubella) is recommended for all children.
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Next Slides will be presented by
Najeeb Ullah
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Mumps
well-known common childhood disease
Characterized by swelling of the parotid glands ,salivary glands and other epithelial tissues.
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Mumps
Primary agent is pavaryxoviridae.
It is a single strand RNA virus.
Portal of entry is respiratory tract.
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Symptoms
Swelling and inflammation of parathyroid gland.
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Treatment
Universal mumps vaccination were introduced in the United Kingdom in 1988.
MMR vaccine.
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Small pox
Some time dangerous…
Universally accepted for 300 years..
First reported by Edward jinner.
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Small pox
Agent is variola.
Portal of entry…. aerosal.
Single linear double stranded DNA.
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Symptoms
Common cold: fever of at least 38.5 °C (101 °F)
Backache
Headache
Nausea
Vomiting
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Treatment
No specific vaccines.
Attuneted vaccines are used..
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Thank you