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Dirofilaria immitis, also known as heartworm or dog heartworm, is a parasitic roundworm that is a type of filarial worm, a small thread-like worm, and which causes dirofilariasis. It is spread from host to host through the bites of mosquitoes. Four genera of mosquitoes transmit dirofilariasis, Aedes, Culex, Anopheles, and Mansonia. [2]
Angiostrongylus vasorum, also known as French heartworm, is a species of parasitic nematode in the family Metastrongylidae. It causes the disease canine angiostrongylosis in dogs. It causes the disease canine angiostrongylosis in dogs.
The table below shows annual population growth rate history and projections for various areas, countries, regions and sub-regions from various sources for various time periods. The right-most column shows a projection for the time period shown using the medium fertility variant. Preceding columns show actual history.
Statistical subregions as defined by the United Nations Statistics Division [1]. This is the list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects.
Spondylosis*, known as spondylosis deformans in dogs, is growth of osteophytes on the ventral and lateral surfaces of the vertebral bodies. It is usually an incidental finding on radiographs and rarely causes symptoms. [39] Masticatory muscle myositis (MMM) is an inflammatory disease in dogs affecting the muscles of the jaw. Signs include ...
The birth rates [1] and death rates [2] in columns one and two are the CIA World Factbook estimates for the year 2022 unless otherwise noted, rounded to the nearest tenth (except for Mayotte and the Falkland Islands with 2010 and 2012 estimates respectively). The natural increase rate in column three is calculated from the rounded values of ...
Dirofilaria immitis, the dog heartworm, rarely infects humans. Filariasis is caused by parasitic nematodes. These worms are transmitted by infected mosquitoes of the genera Aedes, Culex, Anopheles and Mansonia. Recent evidence suggests that climate change has an influence in the spread of the parasitic disease and its vectors.
The National Council on Pet Population Study and Policy conducted a survey over four years, 1994–1997, and cautions against the use of their survey for wider estimates: "It is not possible to use these statistics to estimate the numbers of animals entering animal shelters in the United States, or the numbers euthanized on an annual basis.