Washington, June 28 (TIWN) The US is set to witness an explosive outbreak of the Delta Covid variant in a month's time, if people are not fully vaccinated, warned Eric Feigl-Ding, an epidemiologist and a public health scientist.

He urged the US Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO) to take urgent steps to vaccinate people in the US.  "But we likely have even less time than that if CDC doesn't act soon," Feigl-Ding said.  "If the CDC doesn't issue new guidelines to stem the growth of #DeltaVariant, which can transmit via merely 5-10 seconds of passive breathing exposure, it will be extremely derelict," he said.  "The Delta variant is leaps and bounds faster than any other variant known to date. It represents a clear and present danger to the world. This Delta variant surge will not end well for low vaccination areas," he noted.  Feigl-Ding emphasised on the need for two doses of vaccines and said "1 dose is definitely not enough".