The 1st Zoonosis Conference in Corrientes “Una Salud” will take place on Thursday September 28th at 8 a.m. in the Auditorium of the Faculty of Veterinary Medicine and with the organization of the Ministry of Health and the Ministry of Production of the Province of Corrientes They will give lectures and talk about hydatidosis, Rabies, brucellosis, carbuncle and leishmaniasis speak.
Particularly in the area of hydatidosis, an update on the implementation of surveillance, prevention and control measures for hydatidosis/cystic echinococcosis is presented to public and veterinary health professionals under the title “Hydatidosis: “cutting the cycle to prevent it””.
The lectures will be given by veterinarian Oscar Jensen together with the head of the Corrientes hydatidosis program, Doctor Marcelo Grella, and the veterinarian of the Corrientes endemic area, Daniel Sarli.
Problem
Hydatid disease (echinococcosis) has been known since 1886 and is widespread in our country, especially in certain regions. The highest endemic levels are found in the Patagonia region, in the provinces of Buenos Aires and Corrientes.
Statistical data in diagnostic and health centers reflect a problematic situation regarding elbow diseases, with high prevalence
elevated human being. Without taking into account the immeasurable damage of an individual and family nature, this zoonotic disease results in significant economic losses, with a greater impact on people who are unaware of it.
Humans can become infected with metacestodes, which can cause serious illness and be a major public health problem in places where Echinococcus-carrying carnivores are in close contact with humans..
The pathogen is found in the small intestine of several species of carnivores, mainly canids, and belongs to the genus Echinococcus, of which four species are known: Granulosus, Multilocularis, Vogeli and Oligarthrus. This intermediate host situation also occurs in humans, in which the larval stage (metacestode or hydatid cyst) develops and causes destructive lesions in the organ where it colonizes.
The ultimate hosts ingest the eggs, which contaminate the environment, especially stables, pastures and waterways. In the massively infected intestine, the parasite forms small, blunt, white projections that are particularly hidden between the villi and give an appearance similar to lymphangiectasia. The hexanth embryo (oncosphere) is released. The oncospheres released from the eggs pass through the intestinal wall, penetrate the subepithelial or chyliferic capillaries and, via the lymphatic or blood pathway, settle in the liver, lungs, spleen and, more rarely, in other organs.
Hydatid cysts are most commonly found in the liver and lungs, although there are some differences between types. Just as the appearance of cysts in the lungs is more common in sheep, in cattle the liver is the usual place where they settle.
In animals, hydatid cysts are generally spherical, turgid, and filled with fluid. They are usually 5 to 10 cm in diameter and can rarely grow larger, possibly because their growth is limited due to the short lifespan of domestic animals and they cannot grow as large as humans.
Typically, the cysts that develop in sheep are fertile and contain a large proportion of protoscolices. Oncospheres that infect other hosts such as cattle may fail to establish or, more commonly, develop into sterile cysts that do not produce protoscolices. In enzootic areas, metacestodes, also called hydacysts, are often found in common or accidental intermediate hosts.
From an epidemiological point of view, the most important and permanent measures are carried out at slaughter and during inspection of cattle to identify animals carrying hydatid cysts. This provides important data for understanding the disease and its spread, evaluating control and eradication plans, and evaluating new diagnostic and treatment techniques.
Although ideal from an operational perspective, as a high percentage of truly positive animals are quickly detected, this diagnostic resource has two critical points: positive animals that may go unnoticed because they are in a precystic stage, and those that are incorrectly considered become carriers of cysts because the macroscopic morphology can be confused with other cyst diseases.
