There is the one thing that is being investigated, both the AstraZeneca and J&J are using what is called the Adenovirus vector, which is fairly harmless and is quite prevalent and that is used to carry the gene, or the vector, which is used to stimulate the immune response for protection.
Go na le selo se le sengwe se se batlisisiwang, AstraZeneca le J & J ba dirisa se se bidiwang Adenovirus vector, e e se nang bokotsi bope mme e e itsegeng thata e bile e dirisetswa go rwala jini, kgotsa veketara, e e dirisiwang go etleetsa a tsibogo ya tshireletso.