Around 8 million metric tons of pandemic-related plastic waste are produced by 193 countries, 26,000 tons of which are now in the world’s oceans and are threatening to disrupt marine life and further pollute beaches, a recent study found.

A group of researchers based in China and the United States published their findings in the Proceedings of the National Academy of Sciences journal this month. 

Since the beginning of the Coronavirus pandemic, concerns had been raised about a boom in plastic pollution amid an increase in the use of personal protective equipment and rapid growth in online commerce. 

The study is among the first to quantify the scale of plastic waste linked to the health crisis.

The cost of the increase in plastic waste has been keenly felt by wildlife. 

As of July, there have been 61 recorded instances of animals being killed or disrupted by pandemic-linked plastic waste, according to a Dutch scientist-founded tracking project.

Among the widely publicized examples are an American robin that was found wrapped up in a face mask in Canada and the body of a perch wrapped in the thumb of a disposable medical glove that was found by Dutch volunteers. National Geographic called the latter the first documented instance of a fish being killed by a glove.

Although only about 30 percent of all covid cases were detected in Asia as of late August, the region was responsible for 72 percent of global plastic discharge, the study found. The researchers said this was due to the higher use of disposable protective equipment, as well as lower levels of waste treatment in countries such as China and India. 

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By contrast, developed economies in North America and Europe that were badly hit by the coronavirus produced relatively little pandemic plastic waste.

The situation worsened after the suspension or relaxation of restrictions on single-use plastic products globally. New York state’s ban on single-use plastic bags, which took effect in spring 2020, was only enforced that fall.

“Better management of medical waste in epicenters, especially in developing countries, is necessary,” the researchers wrote, while also calling for the development of more environmentally friendly materials.

“Governments should also mount public information campaigns not only regarding the proper collection and management of pandemic-related plastic waste but also their judicial use,” said Von Hernandez, global coordinator of Break Free From Plastic, an advocacy group. “This includes advocating the use of reusable masks and PPEs for the general public ... especially if one is not working in the front lines.”

A huge percentage of plastic waste enters the world’s oceans via major rivers, according to the researchers, who found that the three waterways most polluted by pandemic-associated plastic were all in Asia: The Shatt al-Arab feeds into the Persian Gulf; the Indus River empties into the Arabian Sea, and the Yangtze River flows to the East China Sea.

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"Given that the world is still grappling with COVID 19, we expect that the environmental and public health threats associated with pandemic-related plastic waste would likely increase." 

The study said that the leading contributor of plastic discharged into oceans was medical waste generated by hospitals, which accounted for over 70 percent of such pollution. Scraps of online shopping packaging were particularly high in Asia, though it had a relatively small impact on global discharge.

Models presented by the scientists indicate that the vast majority of plastic waste produced as a result of the pandemic will end up either on sea beds or beaches by the end of the century. 

The waste could also become a possible death trap for coastal animals, plastic buildup on beaches can increase the surrounding temperature, making the environment less hospitable to wildlife. And as plastic degrades over time, toxic chemicals may be released and moved up the food chain.