Iran
Only one country, Iran has eliminated the shortage of transplant organs—and only Iran has a working and legal payment system for organ donation. It is also the only country where organ trade is legal. The way their system works is, if a patient does not have a living relative or who are not assigned an organ from a deceased donor, apply to the nonprofit Dialysis and Transplant Patients Association (Datpa). The association establishes potential donors, those donors are assessed by transplant doctors who are not affiliated with the Datpa association. The government gives a compensation of $1,200 to the donors and aid them a year of limited health-insurance. Additionally, working through Datpa, kidney recipients pay donors between $2,300 and $4,500. Importantly, it is illegal for the medical and surgical teams involved or any middleman to receive payment. Charity donations are made to those donors whose recipients are unable to pay. The Iranian system began in 1988 and eliminated the shortage of kidneys by 1999. Within the first year of the establishment of this system, the number of transplants had almost doubled; nearly four-fifths were from living unrelated sources. [55] Nobel Laureate economist Gary Becker and Julio Elias estimated that a payment of $15,000 for living donors would alleviate the shortage of kidneys in the U.S.

Israel
Since 2008, signing an organ donor card in Israel has provided a potential medical benefit to the signer.
The authors of a study on the bubonic plague in Oran stress that the disease "is primarily a bacterial zoonosis affecting rodents. It is caused by Yersinia pestis and is transmitted from animal to animal by fleas. Humans usually become infected through the bite of an infected rodent flea." The sanitary control measure instituted by the public health authority was chemical in nature: "Intra- and peridomestic spraying with permethrin was conducted. Deltamethrin was dusted on the tracks and around the burrows of rodents located in a radius of 10 km around the dwelling of the patients. Uncontrolled killing of rats was prohibited. "A large proportion of viral pathogens that have emerged recently in humans are considered to have originated from various animal species. This is shown by several recent epidemics such as, avian flu, Ebola, monkeypox, and Hanta viruses. There is evidence to suggest that some diseases can potentially be re-introduced to human populations through animal hosts after they have been eradicated in humans. There is a risk of this phenomenon occurring with morbilliviruses as they can readily cross species barriers. CST can also have a significant effect on produce industries. Genotype VI-Avian paramyxovirus serotype 1 (GVI-PMV1) is a virus that arose through cross-species transmission events from Galliformes (i.e. chicken) to Columbiformes, and has become prevalent in the poultry industry.CST of rabies virus variants between many different species populations is a major concern of wildlife management.