NEW DELHI (AP) — India will begin the world’s largest lockdown, Prime Minister Narendra Modi announced in a TV address Tuesday night, warning that anyone going outside risked inviting the coronavirus inside their homes, and pledging $2 billion to bolster the country’s beleaguered health care system.

“To save India and every Indian, there will be a total ban on venturing out of your homes,” Modi said, adding that if the country failed to manage the next 21 days, it could be set back by 21 years.