<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.kuna chanjo takriban 200 za uviko-19 yalioko katika hatua mbali mbali ya majaribio ya kliniki ulimwenguni, na mengi miongini mwao yameandaliwa na maktaba za uchina.  <response>: there are almost 200 covid-19 vaccines in different stages of clinical trials around the world, and several of those are being produced by chinese laboratories. 