https://www.pap.pl/aktualnosci/news%2C1043546%2Cchile-szczepi-przeciwko-sars-cov-2-lwy-tygrysy-pumy-i-orangutany.html?fbclid=IwAR2ZM-eLzjz6l9B_vkt0F_CjPqGymhUEFtb0thcPbsNx6j2Gp-lmt1g3MUw

https://www.the-scientist.com/news-opinion/the-rise-of-covid-19-vaccines-for-animals-69503?fbclid=IwAR1sB6uS-9PFchuKvENqRx8Ykkg7VHMdoxztkLfSVI0Kwk0C4XrvEKnitic