Skip to main content

Toxoplasma

  • Chapter
  • First Online:
Book cover Parasitic Protozoa of Farm Animals and Pets

Abstract

Toxoplasmosis is a zoonotic infection caused by the protozoon Toxoplasma gondii affecting animals worldwide. T. gondii has a facultative heteroxenous life cycle with felids as definitive hosts and a wide range of mammalian and avian species as intermediate hosts. Infectious stages are oocysts present in felid feces, bradyzoites forming tissue cysts, and tachyzoites. While two major clonal lineages (type II and III) dominate clinical and natural isolates in Europe and North America, other parts of the world, like Brazil and Argentina, are dominated by non-clonal or other clonal T. gondii lineages, representing a greater genetic diversity. Different animal species show a variable degree of susceptibility to T. gondii infection and to the development of clinical signs. Humans are considered susceptible, and about one third of the human population in the world is estimated to be infected. Toxoplasmosis is an important abortive disease in small ruminants. It is mainly asymptomatic in cattle and chicken, but the latter is an epidemiological sentinel, and isolation of viable parasites from this source is frequent. Infected pigs can show reproductive failure, and, in addition, their tissues are considered, together with infected small ruminant tissues, a relevant source of human infection. Cats and dogs can show neuromuscular disease mainly associated with other immunosuppressive conditions, such as viral infections. Some species like New World monkeys, lemurs, Pallas’ cats, slender-tailed meerkats, and some Australian marsupials are highly susceptible to fatal generalized toxoplasmosis. General control measures are presented, focusing on the prevention of human toxoplasmosis.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 109.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 139.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 199.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Gastón Moré .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2018 Springer International Publishing AG, part of Springer Nature

About this chapter

Check for updates. Verify currency and authenticity via CrossMark

Cite this chapter

Moré, G., Venturini, M.C., Pardini, L., Unzaga, J.M. (2018). Toxoplasma . In: Florin-Christensen, M., Schnittger, L. (eds) Parasitic Protozoa of Farm Animals and Pets. Springer, Cham. https://doi.org/10.1007/978-3-319-70132-5_6

Download citation

  • DOI: https://doi.org/10.1007/978-3-319-70132-5_6

  • Published:

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-70131-8

  • Online ISBN: 978-3-319-70132-5

  • eBook Packages: MedicineMedicine (R0)

Publish with us

Policies and ethics