The Wall Street Journal reported that all Tesla workers in Reno, Nevada's battery factory will have to wear masks indoors starting Monday. The original rule required that workers not vaccinated against COVID-19 wear masks indoors. However, the new rule also applies to vaccinated workers.According to the Johns Hopkins Coronavirus Resource Center Nevada has experienced more than 26,000 COVID infections and 298 deaths in the last month. Nearly 47 percent of Nevada's population have been vaccinated, according to the center.Elon Musk, Tesla CEO, fought against COVID restrictions at the start of the pandemic in 2017. This included stay-at-home orders in Alameda County California, where the Fremont plant is situated. Although the company ultimately agreed to temporarily close the Fremont facility in March 2020. Musk, however, announced in May 2020 that the plant would be reopened in defiance to local shelter-in place orders. He even sued the county and threatened to relocate Tesla operations from California. Musk stated in November that he had likely suffered from moderate covid.California revised its mask rules on August 3rd, making it mandatory that everyone aged 2 and over wear masks indoors, regardless of their vaccination status.Nevada Gov. Steve Sisolak, the Nevada governor, revived the state's mask mandate late last month in anticipation of new guidelines from Centers for Disease Control and Prevention. Nevada residents must wear masks when they are in public, in counties with high or substantial transmission. This includes Clark, where Las Vegas is, and Washoe where Reno is.