Staff members, wearing protective suits, watch as a plane carrying 32 Mongolian citizens for their evacuation from the Chinese city of Wuhan arrives in Ulaanbaatar, the capital of Mongolia on February 1, 2020.

Disney, Tesla, more than a dozen airlines and other global companies with significant footprints in China are suspending operations, temporarily shutting factories and instituting travel restrictions as they grapple with the coronavirus outbreak that's derailed commerce in China and sent global markets spinning.

Infections from the virus skyrocketed this week, topping 11,000 as of Friday and surpassing the total number of infections from the nine-month SARS outbreak in less than a month. The World Health Organization formally declared the pneumonia-like virus a global health emergency on Thursday, citing concern that the outbreak continues to spread to other countries with weaker health systems. U.S. officials followed suit on Friday, imposing mandatory quarantines on U.S. citizens who have recently traveled to the Hubei province, the epicenter of the outbreak.

Local governments in China have extended mandatory factory shutdowns for the Lunar New Year from Jan. 31 to Feb. 9, impacting U.S. companies from Walmart to Tesla. Analysts are beginning to sour on companies with exposure to China, pressuring some stocks. A slew of companies this week warned investors that as the impact of the virus continues to spread, and institutions respond, it threatens to disrupt sectors from travel and retail to technology that look to the Chinese market for consumer demand or cheaper manufacturing in China.

Most of the economic cost of the outbreak "is not related to the virus," said CEO of the World Travel and Tourism Council Gloria Guevara, who was the tourism minister for Mexico during the H1N1 outbreak. "It's related to the panic," and it can take between ten months and 19 months for tourism and spending in an area to fully recover from a local outbreak.