After accusing the US of having military-biological laboratories in Ukraine, Russia has claimed that there are at least 4 US biological laboratories in Nigeria.

Kirillov stressed that in light of repeated US violations of biosafety requirements and evidence of careless storage of pathogenic biomaterials, the WHO should investigate the activities of US-funded labs in Nigeria, which are located in the cities of Abuja, Zaria and Lagos, and report their findings to the international community. Kirillov also expressed concerns regarding the safety of smallpox virus samples within the US.