Value fashion retailer Primark has reported revenue of GBP3.7bn (US$4.5bn) for the first half, representing a 3.9% uptick in constant currency and a 2.2% rise at actual exchange rates. But the Covid-19 outbreak is set to drastically impact its performance for the rest of the financial year - and is likely to give Primark reason to rethink its bricks-and-mortar only strategy for the future.