Viruses Flashcards
Human Papillomavirus Family Enveloped? Genome #serotypes
Papvaviridae family
Non-enveloped
dsDNA genome
>100 serotypes
Which HPV serotypes cause common warts?
Which HPV serotypes cause plantar warts?
Common: HPV 2, 3, and 10
Plantar: HPV 1 and 4
Molluscum Contagiosum Virus Family Genome Location of Replication
Molluscum contagiosum virus
Poxviridae family
Large, dsDNA genome
Replicates in cytoplasm
HSV
Family
Enveloped?
Genome
Herpesviridae family
Enveloped
dsDNA genome
Chickenpox Virus Family Enveloped? Genome #Serotypes
Varicella-Zoster Virus Herpesviridae family Enveloped dsDNA genome 1 serotype
Varicella vaccine:
Prevents what infections?
Dead? live? weakened?
Dose timing (2)
- Prevent primary infections with VZV
- Live attenuated
- Dose 1 at 12-15months. Dose 2 at 4-6 years
* Combined with MMR to make MMRV since 2005
Zoster vaccine
Protection from what?
What is different from Varicella vaccine?
Recommended for who?
- Protects against VZV reactivations
- Same live attenuated strain as varicella but with higher titer
- Recommended for all adults over 60, regardless of whether or not they have had previous episode of zoster
Smallpox Virus Family Genome Location of replication
Variola virus
Poxviridae family
Large, dsDNA genome
Replicates in cytoplasm
Variola Virus Vaccine
What is it? State of virus? Which virus?
Contemporary vaccine consists of a live strain of a vaccinia virus
Measles Virus: Family Genome Enveloped? Two important genes and their protein functions #Antigens
Paramyxovirus -ssRNA genome Enveloped F gene- fusion HA (hemeagglutin)- attachment 1 antigenic type
Measles vaccine: Live? dead? weakened? Prepared in what? Combined with which other vaccines? Dose timing (2)
Live, attenuated Prepared in fibroblasts of chick embryos MMR, MMRV 1st dose: 12-15months 2nd dose: 4-6 years
Rubella Virus: Family Enveloped? Genome Vaccine: state of virus Purpose of vaccine
Togaviridae family Enveloped \+ssRNA genome Live, attenuated vaccine Prevent congenital rubella syndrome
Fifth Disease
Causative virus
Family
Genome
B19 Parvovirus
Parvoviridae family
ssDNA genome
Roseola Infantum Causative viruses (2) Family Genome Enveloped Replicates in which cells? Latent in which cells?
HHV 6 and 7* Herpesviridae family dsDNA genome Enveloped Replicates in B cells, T cells, and oral pharynx Latent in T cells *HHV 7 operates only in CD4+ T cells