Norway’s renowned University of Science and Technology has issued an alert urging students studying abroad to return home as a response to the coronavirus pandemic — specifically singling out the U.S.

The warning from the nation’s largest university, with some 40,000 students, applies “especially” to students staying in nations with “poorly developed health services,” as well as countries, “for example the USA,” with a “poorly developed collective infrastructure.”

The alert notes it can be difficult in the U.S. to “get transport to the airport if you don’t have a car.” It added, apparently referring to “poorly developed health services,” that, “The same applies if you don’t have health insurance.”

“In line with the advice from the Ministry of Foreign Affairs, I, as NTNU’s Rector, strongly recommend that all NTNU students who are outside Norway return home. This applies especially if you are staying in a country with poorly developed health services. This also applies for countries with poorly developed collective infrastructure, for example the USA, where it can be difficult to get transport to the airport if you don’t have a car. The same applies if you don’t have health insurance.”

The university’s alert came as Norway’s Ministry of Foreign Affairs issued a statement Saturday advising all Norwegian citizens abroad to return home.

The university subsequently tweaked the post so as not to single out the United States.

Norway is shutting down its airports and harbors to foreign travelers on Monday. Norwegians will be allowed to return home — though they’ll have to be quarantined for 14 days.

In 2018 private meeting with lawmakers, President Donald Trump reportedly expressed a desire for more immigrants from Norway after complaining about people moving to the U.S. from “shithole countries,” and naming Africa and Haiti, according to one of those present. Responses from Norwegians at the time indicated they were quite happy where they were.

Here’s how some Twitter users responded to the Norwegian university’s directive:

Remember when Trump asked why America couldn't pull more immigrants from countries like Norway?



Now we know for sure. Because Norway considers America to be a shithole country. https://t.co/YKotNQsReL — Andray (@andraydomise) March 15, 2020

Norway isn’t wrong. This country is fucked up — Imani Gandy ☄️🌍🔥 (@AngryBlackLady) March 15, 2020

What Norway is telling its students. If you're in a 3rd world country like the US, return home :-)#coronavirus pic.twitter.com/hIGPvjv78x — Mahesh Murthy (@maheshmurthy) March 15, 2020

Like the rest of the world, Norway is laughing at us.



Rightly so. pic.twitter.com/E5RzHeEvjx — BrooklynDad_Defiant! (@mmpadellan) March 15, 2020

PLEASE STOP ROASTING US, NORWAY. WE CANNOT AFFORD THE COPAY FOR THE BURN WARD. 😭😭😭😩😩😩 — Katelyn 🧼💧👏 (@katelynanne) March 15, 2020

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This article originally appeared on HuffPost.