India reports world's biggest daily coronavirus cases spike

India reported Sunday 78,761 new coronavirus cases in 24 hours, taking the total number in the country to over 3.5 million.

Why it matters: It's the highest single-day spike in COVID-19 cases reported by a country since the pandemic began. India has the fastest-growing number of daily cases, with over 75,000 being reported for four consecutive days, per AP. "Crowded cities," not enough contact tracing and "lockdown fatigue" are driving the spread in the country of 1.4 billion people, as restrictions are loosened aimed a struggling economy, the New York Times notes.