A hilltop town in Spain that cut itself off from the world a month ago has reported zero cases of coronavirus.

Drastic measures were enforced in the fortress town of Zahara de la Sierra, in Cadiz, Andalusia, when Spain went into a state of emergency on 14 March – and they appear to be working.

The town of 1,400 inhabitants has yet to report a single case of COVID-19, the disease caused by coronavirus, despite more than 200,000 cases across Spain so far.

Spain has one of the highest COVID-19 death rates in the world per million of population. According to Johns Hopkins University, there have been more than 20,000 coronavirus deaths in the country.

A woman who tested positive for coronavirus died six miles north of Zahara, while 16 residents of a nursing home died in nearby Ubrique, 22 miles away.

But Zahara has managed to keep the coronavirus at bay through a series of strict social distancing measures.

After Spain declared a state of emergency, Zahara’s mayor, Santiago Galvan, closed four of the picturesque town’s five entrances.

A checkpoint on the single road into the town is manned by one police officer, while two staff in protective clothing clean every vehicle that enters with a mix of bleach and water, CNN reported.

“There is no car that comes through the checkpoint that’s not disinfected,” said Galvan, adding that French and German tourists were turned away from the town in the early days of the lockdown.

“We have managed to give tranquility to our neighbours. They know no one ‘unknown’ can come in.”

Inside the town, the streets, plazas and homes are disinfected twice a week by a group of about 10 people, while a local business has paid two women to deliver food and medical supplies to residents.

One of the women, Auxi Rascon, 48, told CNN:

“They are very happy because they don’t need to go out, they feel protected and feel confident.

“They took the right measures at the right moment, and now we are seeing the results.”