The MEP retweeted a tweet from Euronews political editor Darren McCaffrey about the countries which had the highest number of coronavirus deaths.
The countries included in the list were the USA, Brazil, Russia, India and the UK.
Mr Verhofstadt said: “Johnson, Trump, Bolsonaro, Putin – the leaders of the infected world.”
The tweet prompted a backlash from angry online users, with one commenting: “The total number is not relevant. Per capita is a more relevant metric in measuring how well states have done.
“Stop trying to look smart Guy.”
Another wrote: “Clean up your own doorstep @guyverhofstadt before you go pointing and criticising others!
“Always ready to have a snide dig; I suppose that’s only to be expected from snides!
“Free up some time for his return to politics most likely lol. You’ll never get it Guy.”
Another commented: “The end is coming, my dear. Enjoy the last days of your power.”
A final said: “Mocking the dead to score political points.”
The Renew Europe MEP was elected to the European Parliament in 2009 and served previously as the Prime Minister of Belgium.
The arch European federalist has said that future British governments would have a way back into Europe if they decided to reverse course after Brexit, possibly even on a fast-track.
READ MORE: Brexit POLL: As Boris threatens EU, will bloc cave in crunch meetings?
Among the countries in the list most hardest-hit by coronavirus appears to be Brazil which reported 909 deaths on Friday, with more than 828,000 confirmed cases.
It is now just behind the US with the second-highest number of coronavirus-related deaths, figures from Johns Hopkins University show.
The WHO said that the health system in Brazil across the country “needs significant support” in order to sustain its effort in this regard.
However, they stressed: “But the data we have at the moment supports a system under pressure, but a system still coping with the number of severe cases.”