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Related Concept Videos

Smallpox01:24

Smallpox

Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
Chickenpox01:20

Chickenpox

Chickenpox is an acute, highly contagious disease caused by the varicella-zoster virus (VZV), a double-stranded DNA virus belonging to the Herpesviridae family. Its transmission occurs primarily through the inhalation of respiratory droplets or direct contact with vesicular fluid from skin lesions. The incubation period typically ranges from 10 to 21 days, during which the virus replicates and disseminates through sequential phases within the host. Although generally self-limiting in children,...
Inhalation Anthrax01:25

Inhalation Anthrax

Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Oogenesis02:07

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
Oogenesis01:22

Oogenesis

Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...

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Nucleofection and In Vivo Propagation of Chicken Eimeria Parasites
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Pox in ostriches.

B Perelman1, A Gur-Lavie, Y Samberg

  • 1Regional Avian Diseases Laboratory, Veterinary Services, Experimental Station Gilat, D.N. Negev, Israel.

Avian Pathology : Journal of the W.V.P.A
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

Ostrich chicks showed signs of pox, confirmed by isolating the virus and infecting turkeys. Vaccination with fowl pox vaccine successfully prevented further infections in young ostriches.

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Area of Science:

  • Avian Medicine
  • Veterinary Virology
  • Ostrich Farming

Background:

  • Pox-like clinical signs were observed in young ostriches (Struthio camelus).
  • The affected birds were between 10 and 60 days old.

Purpose of the Study:

  • To confirm the causative agent of the observed pox-like disease in ostriches.
  • To evaluate the efficacy of fowl pox vaccine in preventing the disease in young ostriches.

Main Methods:

  • Isolation of the infectious agent from affected ostriches.
  • Experimental reproduction of pox lesions in turkeys using the isolated agent.
  • Vaccination of young ostriches with a commercial fowl pox vaccine.

Main Results:

  • The isolated agent successfully reproduced typical pox lesions when inoculated into turkeys.
  • Vaccination with fowl pox vaccine prevented further disease outbreaks in the ostrich flock.

Conclusions:

  • The observed disease in ostriches was confirmed as pox, likely caused by a poxvirus.
  • Fowl pox vaccine is effective in preventing pox infection in young ostriches, offering a viable control strategy for ostrich farming.