Boris johnson steps us coronavirus war amid fears thousands infected

I think there may be some confusion here. Boris Johnson is the Prime Minister of the United Kingdom, and he has not "stepped up" a "coronavirus war". The UK government has been responding to the COVID-19 pandemic, which is a global health crisis caused by the SARS-CoV-2 virus.

In fact, Boris Johnson was hospitalized with COVID-19 in April 2020 and spent several days in intensive care. He has since made a full recovery and has continued to lead the UK government's response to the pandemic.

The UK government has taken a range of measures to try to slow the spread of the virus, including implementing social distancing measures, closing non-essential businesses, and encouraging people to work from home. The government has also set up a vaccination program to try to protect people from the virus.

It's possible that you may be thinking of a different country or leader, or that there is some other context that I'm not aware of. If you could provide more information or clarify what you mean, I'd be happy to try to help.