Updated: October 29, 2020 3:08 PM EDT | Originally published: October 29, 2020 12:22 AM EDT

While many countries around the world are hitting new highs in coronavirus cases, Taiwan has achieved a different kind of record — 200 days without a locally transmitted case.

Taiwan holds the world’s best virus record by far and reached the new landmark on Thursday, even as the pathogen explodes anew in Europe and the U.S. Taiwan’s last local case came on April 12; there has been no second wave.

What did this island with 23 million people do right? It has had 550 confirmed cases, with only seven deaths. Experts say closing borders early and tightly regulating travel have gone a long way toward fighting the virus. Other factors include rigorous contact tracing, technology-enforced quarantine and universal mask wearing. Further, Taiwan’s deadly experience with SARS has scared people into compliance.

“Taiwan is the only major country that has so far been able to keep community transmission of Covid eliminated,” said Peter Collignon, an infectious disease physician and professor at the Australian National University Medical School. Taiwan “probably had the best result around the world,” he said, and it’s “even more impressive” for an economy with a population about the same size as Australia’s, with many people living close to one another in apartments.

Taiwan will be among the few economies to grow this year, with the government in August forecasting that the gross domestic product will expand 1.56% in 2020.

Still, Taiwan isn’t out of the woods yet as it recorded 20 imported cases in the past two weeks, mostly from Southeast Asian countries like the Philippines and Indonesia. And others that fought the virus well initially, like Singapore and Japan, then had spikes in cases.

What countries with surging infections can take away from Taiwan’s experience is that nothing works without contact tracing those who have tested positive and then quarantining them, said Chen Chien-jen, Taiwan’s former vice president and an epidemiologist, in an interview.

Also, as it’s not easy to make people stay in quarantine, Taiwan has taken steps to provide meal and grocery delivery and even some friendly contact via Line Bot, a robot that texts and chats. There is also punishment — those who break quarantine face fines of up to NT$1million ($35,000).

Here is how Taiwan has achieved its milestone:

Border control

Taiwan shut down to all non-residents in March and has kept tight control over its borders since.

“Taiwan’s continual success is due to strict enforcement of border control,” says Jason Wang, director of Stanford University’s Center for Policy, Outcomes and Prevention. That includes symptom-based surveillance before travelers board flights and digital fence tracking via cellular signals to ensure their compliance with a 14-day quarantine, he said.

Masks, distribution

The decision to stockpile and have central distribution of face masks played a key role in Taiwan’s success. The government early in the pandemic stockpiled all domestically produced face masks and banned export. Within four months, companies increased production from 2 million to 20 million units a day, enabling the island to ration masks to residents on a regular basis.

Contact tracing, quarantine

Taiwan has world-class contact tracing — on average, linking 20 to 30 contacts to each confirmed case. In extreme situations, such as that of a worker at a Taipei City hostess club who contracted the virus, the government tracked down as many as 150 contacts. Then, all contacts must undergo a 14-day home quarantine, even if they test negative.

So far, about 340,000 people have been under home quarantine, with fewer than 1,000 fined for breaking it. That means 99.7% have complied, according to Chen. “We sacrificed 14 days of 340,000 people in exchange for normal lives for 23 million people,” Chen said.

SARS experience

The painful lessons of past epidemics paved the way of Taiwan’s success in fighting Covid. It began building an emergency-response network for containing infectious diseases after its experience with SARS in 2003, when hundreds became ill and at least 73 died, for the world’s third-highest infection rate. Taiwan later experienced pandemics like bird flu and influenza H1N1. As a result, its residents are acutely aware of disease-fighting habits like hand-washing and mask wearing.

Contact us at letters@time.com.

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