english: That research requires first that the vaccine be developed, then that it be studied for safety and effectiveness in animals, who are challenged with the virus after they are vaccinated, and then it must go into human studies.
non_english: Tento výskum vyžaduje, aby sa vyvinula vakcína, potom sa otestovala na zvieratách, aby sme zistli, či je bezpečná a účinná pre zvieratá nakazené vírusom po očkovaní, a potom musia nasledovať štúdie na ľuďoch.