Global disease experts say little is known about China's experience with long-term COVID effects thought to have afflicted millions with debilitating fatigue, brain fog and other symptoms
There were no immediate reports of injury or damage from the quake, which was felt as far away as the capital, Lima.
The quake struck at a depth of more than 100 km (60 miles), limiting the shaking level.
The Euro-Mediterranean Seismological Centre said in a tweet the quake occurred in a very sparsely populated region of the Amazon rainforest.
The US Tsunami Warning System said there was no tsunami warning after the quake.