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SUBMITTED TO:
Prof.(Dr.) S. Maherchandani
SUBMITTED BY:
Deepika Jain
M.V.Sc. (Ist year)
Vety. Public Health
 Viruses are obligate intracellular, potentially
pathogenic entities, possessing only one type of
nucleic acid either RNA or DNA.
 It is surrounded by a protective coat called Capsid.
 In some viruses the capsid is surrounded by an
additional spikey coat called the envelope.
 The extracellular infective form of virus is called
Virion.
 It is the process of naming viruses and placing
them into a taxonomic system.
 Currently two main classification systems have
been used. They are:
1. ICTV(International Committee on
Taxonomy of Viruses) classification system
2. Baltimore classification system
 The International Committee on Taxonomy of Viruses began
to devise and implement rules for the naming and
classification of viruses.
 Viral classification starts at the level of order and continues as
follows, with the taxon suffixes given in italics:
ORDER(virales)
FAMILY(viridae)
SUB FAMILY(virinae)
GENUS(virus)
SPECIES
 As of 2012, seven orders,96 families,22
subfamilies,420 genera and 2,618 species of
viruses have been defined by the ICTV.
 The seven orders are following:
 Caudovirales
 Herpesvirales
 Ligamenvirales
 Mononegavirales
 Nidovirales
 Picornavirales
 Tymovirales
 The division of the virus into classes based on genome
type and mode of replication and transcription.
 Suggested by David Baltimore- Seven Baltimore classes.
 Major groups of viruses are distinguished by their
nucleic acid content as either DNA or RNA.
 RNA and DNA viruses can be single-stranded (ssRNA,
ssDNA) or double-stranded(dsRNA, dsDNA)
1. Adenoviridae
2. Herpesviridae
3. Poxviridae
4. Papovaviridae
5. Circoviridae
6. Asfarviridae
7. Iridoviridae
8. Parvoviridae
9. Hepadnaviridae
FAMILY GENOME ENVELOPED/
NON-
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Adeno-
viridae
ds
linear
Non-
Enveloped
icosahedral Atadeno-
virus
Mastadeno
-virus
Aviadeno-
virus
Siadeno-
vius
Ichtadeno-
virus
Duck
adenovirus
1
Canine
adenovirus
1
Fowl
adenovirus
A
Frog
siadeno-
virus A
Sturgeon
ichtadeno-
virus A
Egg Drop
Syndrome
Infectious
Canine
Hepatitis
Inclusion
Body
Hepatits&
Hydroperi
-cardium
syndrome
FAMILY GENOME ENVELOPED /
NON-
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Herpes-
viridae
ds
linear
Enveloped Icosahedral Subfamily-
Alphaherp-
esvirinae
Varicello-
virus
Mardivirus
Iltovirus
Pseudo -
rabies
virus
Bovine
herpes-
virus 1
Gallid
herpes –
virus 2
Gallid
herpes-
virus 1
Pseudo-
rabies
Infectious
Bovine
Rhinotra-
cheitis
Marek’s
Disease
Infectious
laryngeo-
tracheitis
FAMILY GENOME ENVELOPED/
NON-
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Subfamily-
Gammahe-
rpesvirinae
Macavirus Alcelaphine
herpesvirus
1
Malignant
catarrhal
fever
Pox-
viridae
ds
linear
Enveloped Complex Subfamily-
Chordo -
poxvirinae
Avipox –
virus
Parapox –
virus
Fowlpox
virus
Orf virus
Pseudoco-
wpox virus
Fowlpox
Orf
Pseudocow
-pox
(Milker’s
nodule)
FAMILY GENOME ENVELOPED/
NON -
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Orthopox-
virus
Capripox-
virus
Bovine
papular
stomatitis
virus
Cowpox
virus
Buffalopox
virus
Lumpy
skin
disease
virus
Sheeppox
virus
Goatpox
virus
Bovine
papular
stomatitis
Cowpox
Buffalopox
Lumpy skin
disease
Sheep pox
Goat pox
FAMILY GENOME ENVELOPED/
NON-
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Asfar-
viridae
ds
linear
Enveloped Icosahedral Asfivirus African
swine fever
Irido-
viridae
ds
linear
Enveloped/
Non-
enveloped
Icosahedral Lymphocy-
stivirus
Lymphocy-
stis disease
virus 1
Lymphocystitis
of freshwater
and saltwater
fish
Parvo-
viridae
ss
linear
Non-
Enveloped
Icosahedral Parvovirus Canine
parvovirus
2
Feline
panleuko-
penia virus
Canine Parvo
disease
Feline
panleuko-
paenia
Circo-
viridae
ss
circular
Non-
Enveloped
Icosahedral Gyrovirus Chicken
anemia
virus
Chicken
Infectious
Anaemia
FAMILY GENOME ENVELOPED/
NON-
ENVELOPED
SYMMETRY GENUS SPECIES DISEASE
Hepadna-
viridae
Partially
ds circular
DNA with
RNA
inter-
mediate
Enveloped Icosahedral Orthohepa-
dnavirus
Avihepa-
dnavirus
Hepatitis B
virus
Hepatits B
virus
Hepatitis B in
mammals
Hepatitis B in
birds
Papova-
viridae
1.Papillom-
aviridae
2.Polyoma-
viridae
ds
circular
Non-
Enveloped
Icosahedral
Bovine
papilloma-
virus 3 & 5
Equine
papilloma-
virus
Canine oral
papilloma-
virus
Simian virus
40
Murine
polyoma-
virus
Warts of skin
and
alimentary
tract
THANK
YOU

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Classification of dna virus ppt

  • 1. SUBMITTED TO: Prof.(Dr.) S. Maherchandani SUBMITTED BY: Deepika Jain M.V.Sc. (Ist year) Vety. Public Health
  • 2.  Viruses are obligate intracellular, potentially pathogenic entities, possessing only one type of nucleic acid either RNA or DNA.  It is surrounded by a protective coat called Capsid.  In some viruses the capsid is surrounded by an additional spikey coat called the envelope.  The extracellular infective form of virus is called Virion.
  • 3.
  • 4.  It is the process of naming viruses and placing them into a taxonomic system.  Currently two main classification systems have been used. They are: 1. ICTV(International Committee on Taxonomy of Viruses) classification system 2. Baltimore classification system
  • 5.  The International Committee on Taxonomy of Viruses began to devise and implement rules for the naming and classification of viruses.  Viral classification starts at the level of order and continues as follows, with the taxon suffixes given in italics: ORDER(virales) FAMILY(viridae) SUB FAMILY(virinae) GENUS(virus) SPECIES
  • 6.  As of 2012, seven orders,96 families,22 subfamilies,420 genera and 2,618 species of viruses have been defined by the ICTV.  The seven orders are following:  Caudovirales  Herpesvirales  Ligamenvirales  Mononegavirales  Nidovirales  Picornavirales  Tymovirales
  • 7.  The division of the virus into classes based on genome type and mode of replication and transcription.  Suggested by David Baltimore- Seven Baltimore classes.  Major groups of viruses are distinguished by their nucleic acid content as either DNA or RNA.  RNA and DNA viruses can be single-stranded (ssRNA, ssDNA) or double-stranded(dsRNA, dsDNA)
  • 8.
  • 9. 1. Adenoviridae 2. Herpesviridae 3. Poxviridae 4. Papovaviridae 5. Circoviridae 6. Asfarviridae 7. Iridoviridae 8. Parvoviridae 9. Hepadnaviridae
  • 10.
  • 11. FAMILY GENOME ENVELOPED/ NON- ENVELOPED SYMMETRY GENUS SPECIES DISEASE Adeno- viridae ds linear Non- Enveloped icosahedral Atadeno- virus Mastadeno -virus Aviadeno- virus Siadeno- vius Ichtadeno- virus Duck adenovirus 1 Canine adenovirus 1 Fowl adenovirus A Frog siadeno- virus A Sturgeon ichtadeno- virus A Egg Drop Syndrome Infectious Canine Hepatitis Inclusion Body Hepatits& Hydroperi -cardium syndrome
  • 12. FAMILY GENOME ENVELOPED / NON- ENVELOPED SYMMETRY GENUS SPECIES DISEASE Herpes- viridae ds linear Enveloped Icosahedral Subfamily- Alphaherp- esvirinae Varicello- virus Mardivirus Iltovirus Pseudo - rabies virus Bovine herpes- virus 1 Gallid herpes – virus 2 Gallid herpes- virus 1 Pseudo- rabies Infectious Bovine Rhinotra- cheitis Marek’s Disease Infectious laryngeo- tracheitis
  • 13. FAMILY GENOME ENVELOPED/ NON- ENVELOPED SYMMETRY GENUS SPECIES DISEASE Subfamily- Gammahe- rpesvirinae Macavirus Alcelaphine herpesvirus 1 Malignant catarrhal fever Pox- viridae ds linear Enveloped Complex Subfamily- Chordo - poxvirinae Avipox – virus Parapox – virus Fowlpox virus Orf virus Pseudoco- wpox virus Fowlpox Orf Pseudocow -pox (Milker’s nodule)
  • 14. FAMILY GENOME ENVELOPED/ NON - ENVELOPED SYMMETRY GENUS SPECIES DISEASE Orthopox- virus Capripox- virus Bovine papular stomatitis virus Cowpox virus Buffalopox virus Lumpy skin disease virus Sheeppox virus Goatpox virus Bovine papular stomatitis Cowpox Buffalopox Lumpy skin disease Sheep pox Goat pox
  • 15. FAMILY GENOME ENVELOPED/ NON- ENVELOPED SYMMETRY GENUS SPECIES DISEASE Asfar- viridae ds linear Enveloped Icosahedral Asfivirus African swine fever Irido- viridae ds linear Enveloped/ Non- enveloped Icosahedral Lymphocy- stivirus Lymphocy- stis disease virus 1 Lymphocystitis of freshwater and saltwater fish Parvo- viridae ss linear Non- Enveloped Icosahedral Parvovirus Canine parvovirus 2 Feline panleuko- penia virus Canine Parvo disease Feline panleuko- paenia Circo- viridae ss circular Non- Enveloped Icosahedral Gyrovirus Chicken anemia virus Chicken Infectious Anaemia
  • 16. FAMILY GENOME ENVELOPED/ NON- ENVELOPED SYMMETRY GENUS SPECIES DISEASE Hepadna- viridae Partially ds circular DNA with RNA inter- mediate Enveloped Icosahedral Orthohepa- dnavirus Avihepa- dnavirus Hepatitis B virus Hepatits B virus Hepatitis B in mammals Hepatitis B in birds Papova- viridae 1.Papillom- aviridae 2.Polyoma- viridae ds circular Non- Enveloped Icosahedral Bovine papilloma- virus 3 & 5 Equine papilloma- virus Canine oral papilloma- virus Simian virus 40 Murine polyoma- virus Warts of skin and alimentary tract