Painted turtle herpesvirus Synonym for chelonid herpesvirus

pale bird syndrome A disease affecting poultry throughout the world. Caused by avian reovirus infections occurring during the first week of age. See Avian orthoreovirus.

Montgomery RD et al (1986) Avian Dis 30, 460

Palestina virus (PLSV)

Palestina virus (PLSV) A serotype of Minatitlan virus in the genus Bunyavirus. With Minatitlan virus forms the Minatitlan virus group. Isolated from Culex (Mel) paracrybda in Ecuador.

Palyam virus (PALV) A species in the genus Orbivirus, belonging to the Palyam serogroup. Isolated from Culex vishnui in Tamil Nadu, India from Culicoides sp in Australia and from Culicoides sp and mosquitoes in Abadina, Nigeria.

Pampa virus (PAMV) A tentative species in the genus Arenavirus. Isolated from rodents, Bolomys sp, in Argentina.

PAn 18400 virus A strain of Pampa virus.

pancreatic necrosis virus of fish See

Infectious pancreatic necrosis virus.

pandemic A widespread epidemic of human disease occurring throughout a country, or a continent or globally.

panhandle structure A structure present in the RNA genome of several segmented negative-stranded viruses (e.g. arena-viruses, bunyaviruses and orthomyxo-viruses) that is formed by base-pairing of complementary sequences, e.g. in influenza virus, each of the eight RNA genome segments has the first 12 nucleotides at the 3' end complementary to the last 13 nucleotides at the 5' end, which form a panhandle structure that is involved in the initiation of transcription. DNA viruses such as adenovirus also utilize panhandle structures during their replicative process.

Fodor E et al (1994) J Virol 68,4092

pan herpesvirus See Pongine herpesvirus 1.

panleukopenia virus See Feline pan-leukopenia virus.

pantomorphic pattern of disease One of a number of disease patterns such as neuromorphic (e.g. encephalitis), visceromorphic (e.g. hemorrhagic fever) and pantomorphic (e.g. non-specific febrile illness) coined by Monath. There is some doubt as to the value of this classification.

Monath TP (1986) In Togaviridae and Flaviviridae, edited by S Schlesinger and MJ Schlesinger. New York: Plenum Press, p. 375

panzootic A widespread epidemic of disease affecting many animals over a wide area.

papilloma of chamois A parapox virus infection. See chamois contagious ecthyma virus.

Papillomaviridae A family of viruses containing only one genus, Papillomavirus. The family description follows the genus description.

Papillomavirus A genus of the family Papillomaviridae. Virions are 55nm in diameter, nonenveloped. The capsid is icosahedral composed of 72 capsomeres in a skewed (T = 7) arrangement. The DNA genome is a single molecule of double-stranded DNA between 6.8 and 8.4 kb in length, G+C content 40-60%. Proteins are encoded on one DNA strand only, with 9-10 open reading frames called E1 to E8 and L1 to L2. Cause papil-lomas of the skin and mucous membranes in various species (cattle, deer, elk, reindeer, dog, humans, rabbit, horse, monkey, sheep, goat, elephant and birds) and are species-specific. Rarely cause transformation in cell cultures or CPE. Type species Cottontail rabbit papillomavirus.

Chan S-Y et al (1992) J Virol 66, 5714 Myers G et al (1997) In Human Papillomaviruses, Los Alamos: Group T10, Los Alamos National Laboratory, Los Alamos NM 87545, USA Orth G (1999) In Encyclopedia of Virology, Second edition, edited by A Granoff and RG Webster. London: Academic Press, p. 1105

papillomavirus sylvilagi See Cottontail rabbit papillomavirus.

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