least 92 countries and now there is also a delta plus variant which has been detected in 22 patients across three states in india. health experts say it shows worrying traits including even greater trance miss ability. a global infectious disease expert -- >> i think that there is a possibility that actually the deadliest phase may be yet to company, especially in poor countries that haven't been given access to vaccination at scale. and the threat that we see more tragic scenes like we saw in india over the months could play out elsewhere. i think that it will take several years before we get a full complement of vaccines manufactured at scale to really break the back of this pandemic. so we need to be thinking of probably a three to five year trajectory. the biggest mistake that we can make right now is in places where we've had higher vaccine