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Magazine publishers got an unexpected boost to their newsstand sales last month — thanks to all the coronavirus panic buying, Media Ink has learned.

Executives at a slew of publishers, including Condé Nast, Meredith and Hearst, say COVID-19 hoarding actually helped boost March sales as shoppers looking to buy whatever they might need to shelter in place added glossies into their carts.

“Sales were up across our portfolio from supermarkets, Target and Walmart,” Doug Olson, the president of People and In Style parent Meredith Magazines, said of sales in the second and third week of March.

In the last week of March — as more states began enacting stay-at-home orders on a rolling basis and store foot traffic declined — sales slowed, Olson said. Still, the earlier lift led to unexpectedly strong newsstand sales in March, he said.

One source said mag sales across the industry jumped 3 percent in mid-March at Target and Walmart — and a whopping 12 percent at supermarkets.

“We’ve seen similar numbers,” said a spokesman for Condé Nast, publisher of The New Yorker and Vogue.

Hearst, which counts Cosmopolitan as its biggest newsstand title, also saw an uptick in newsstand sales in mid-March, according to Troy Young, president of Hearst Magazines. “I think subscriptions have been strong for everybody,” he said.

One recent survey said 70 percent of consumers are worried about printed magazines carrying the virus, but mag executives told Media Ink that shelter-in-place orders have boosted both their print and digital subscriptions.

“Eighty five percent of all our magazines are delivered in polybags, so it has not been touched by anyone,” Olson said. “Renewals have been strong,” he added.

Meredith’s direct-mail campaigns, hatched long before the coronavirus took hold but mailed during the crisis, have also helped, Olson said.

Young at Hearst said digital traffic, even for the lifestyle and fashion titles, has been up “30 percent year over year.” Still, he might tinker with print frequencies down the road, primarily because advertising is a big question mark.

“What’s not holding up for anybody is advertising,” said Young. “How much will it be down — 10 percent, 20 percent, 30 percent?”

Monthly magazines had already sold the ads for the May issues prior to the pandemic, so the slowdown is expected to start showing in the June issues. Some advertisers have pulled back completely, while others are trying to recalibrate their messages.

“The thing that will be really hard is if it extends into the fourth quarter,” Young said.