CNN: Biden to mark upcoming 500,000 US Covid-19 deaths with candle lighting ceremony Monday. Fauci laments 'historic' Covid toll as US nears 500,000 deaths Coronavirus map of the US: latest cases state by state Covid world map: which countries have the most coronavirus vaccinations, cases and deaths? Vaccinating children could be key to stifling Covid, say experts From HIV to Covid, pandemics …