Viruses

Question 1

Adenovirus

Answer 1

Non enveloped.
Double strand
DNA
Droplet, direct contact, faecal oral.
Upper respiratory tract infection if inhaled.
Gastroenteritis if ingested.

Question 2

Influenza A

Answer 2

Enveloped
Single strand
RNA
Droplet spread
Haemagglutin allows binding to CSM and entract into cell.
Neuraminidase cleaves glycoproteins to allow viral release from cell following replicaiton.
URTI

Question 3

HIV

Answer 3

Enveloped
Single strand
RNA 
Bodily fluids and blood
Infect CD4+ using reverse transcriptase to form DNA and host cell mechanisms to form new viral proteins and cells.
Causes CD4 lysis.

AIDS if CD4

Question 4

Hepatitis A

Answer 4

Enveloped
RNA
Faecal oral
Liver inflammation, hepatic jaundice.

Question 5

Hepatitis B

Answer 5

Enveloped
DNA double strand
Bodily fluids and blood
REplicates within hepatocyes
Inflmmation --> host damage by immune mechanisms.
Hepatomegaly, jaundice

Question 6

Hepatitis C

Answer 6

Enveloped
RNA single strand
Blood to blood contact

Question 7

Varicella zoster

Answer 7

Enveloped
Double strand DNA
Inhalation of virons, direct contact with blisters
Adaptive immune response, lifelong IgG for immunity.
Reactivated in immunocompromise -> shingle.

Question 8

Norovirus
Envelope
DNA RNA

Answer 8

Non- enveloped
RNA
Single stranded
Direct person to person
Indirect from water or food
Gastroenterirtis
VOmiting, nausea, diarrhoea