In the US, different states have had different levels of success with limiting the growth of Covid-19 cases. California, the state I live in, has been better than most in the number of cases per capita and this is being credited to early and vigorous action by the governor in issuing social distancing rules and shutting down parks and beaches, since even a couple of days delay can make a big difference in outcomes
After a resident of California died of coronavirus on 4 March, Governor Gavin Newsom declared a state of emergency. It was the first Covid-19 related death in the US outside of Washington state.
More than 24,424 people have tested positive for coronavirus in California and 821 people have died. Yet the losses, while tragic, are a fraction of what experts predicted the state’s 40 million people would face.
The virus is spreading fast in southern California and the state’s Central Valley – so it’s not out of trouble yet.
But considering the dire prediction made by Governor Gavin Newsom in March that up to 25 million Californians could be infected with coronavirus, the situation in California has been surprisingly well controlled.
…California was the first place in the United States to issue shelter in place orders. Gov Newsom ordered California to shelter in place on 19 March – three days before New York.
…But can a day or two really make that much difference? “Oh yes,” said Dr Neha Nanda, the medical director of infection prevention and antimicrobial stewardship at Keck Medicine, University of Southern California.
“Even being one day ahead can have a huge impact,” she told the BBC. “The morbidity we will be able to avert, the mortality we will be able to avert – it’s huge.”
Because so little is known about the virus or how it can be treated, it makes prevention “more important than anything else,” she said. “The most potent tool that you have in tool kit is social distancing.”

