Fatalism: Que Sera Sera?

‘Que Sera Sera’, I find myself inadvertently humming Doris Day’s song. The tune is melodiously catchy and unlike many Hollywood musical scores, its lyrics are meaningful. ‘Que Sera Sera: What will be will be. The future is for us to see’.
Is there a whiff of fatalism about it? I think so. The message is one of resignation and stoicism. ‘Don't worry about the future, there is nothing you can do about it, accept things as they come’ i.

How does such an attitude relate to Covid-19 situation?
A true fatalist would argue that we should go with the flow and accept the pandemic as part of God’s Will which for him is expressed in their interpretation of religious scripts. By contrast, the average determinist is likely to support all measures taken to counteract the Covid-19 pandemic whilst at the same time view such actions as well as the pandemic itself, as predetermined by a chain of causes and effects stretching back all the way and originating to the Big Bang. For the determinist, all the ingenuity and analytical thinking of thousands of individuals involved in the search for a vaccine does not contain any element of Free Will. Would it be wrong to describe such a view as being indistinguishable from Fatalism?