New Covid-19 infections in the US will tick higher this fall as the highly contagious Delta variant spreads, warned epidemiologist Dr. Anne Rimoin on Wednesday.

‚ÄúThis variant, the Delta variant, is 60% more contagious than the Alpha variant, it just shows you that if you have the same contact with someone who has previously had Covid and are not vaccinated, you are at a significant risk of infection “Rimoin, professor of epidemiology at the UCLA School of Public Health, told CNBC’s” The News with Shepard Smith “.

“It’s a much more serious game now,” said Rimoin.

The Delta Covid variant accounts for about 1 in 5 new cases in the United States. Those numbers have doubled in just a few weeks. Health experts, including Dr. Anthony Fauci and the Director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, expect the Delta variety to become the dominant variety in the US

Rimoin emphasized the importance of vaccinations to protect against the virus.

“It’s really important to keep this in mind to get as many people vaccinated so we can build as much immunity as possible,” said Rimoin.