Police in Paris fired tear gas to disperse demonstrators on Wednesday, as 19,000 people protested throughout France over new coronavirus restrictions.

Some of the protests began in the morning in Paris as the annual military parade for the traditional Bastille Day parade, watched by President Emmanuel Macron, was taking place along the famous Champs-Elysees.

The demonstrators are unhappy at the decision announced on Monday to oblige health workers to get vaccinated and bring in a vaccine health pass for most public places.

Unvaccinated people would require, for example, a negative test result to enter restaurants.

Since the announcement a record number of French people booked appointments for COVID-19 jabs.

"This is in the name of freedom" was the message from some of the protesters.

In one area of the French capital police fired teargas to disperse the crowd.

The declared protest route was not respected, the prefecture of police said in a tweet, deploring the "throwing of projectiles" and lighting of fires by the demonstrators.

Throughout Paris some 2,250 people protested, while other demonstrations took place in Toulouse, Bordeaux, Montpelier, Nantes and elsewhere. The French authorities put the total number of protesters at 19,000.

The interior ministry said that there were altogether 53 different protests throughout France.

"Down with dictatorship", "down with the health pass" protesters chanted.

One of them, Yann Fontaine, a 29-year-old notary's clerk from the Berry region in central France, said he had come to demonstrate in Paris arguing that the imposition of a health pass equalled "segregation".

"Macron plays on fears, it's revolting. I know people who will now get vaccinated just so that they can take their children to the movies, not to protect others from serious forms of COVID," he said.

The French government on Tuesday defended its decision to impose COVID tests for unvaccinated people who want to eat in restaurants or take long-distance trips, as the country looks to avoid a surge in more contagious Delta cases.

"There isn't any vaccine obligation, this is maximum inducement," government spokesman Gabriel Attal said then.

"I have a hard time understanding, in a country where 11 vaccines are already mandatory... that this could be seen as a dictatorship," he said, adding that after a year of studying the vaccines "the time of doubting is long past".

The rules will be relaxed for teenagers who have only been able to get the jabs since mid-June - "Making summer hell is out of the question," Attal said.

According to an Elabe opinion poll published Tuesday, the new safety measures have a large majority of approval amongst French people.

Around 35.5 million people - just over half of France's population - have received at least one vaccine dose so far. 

At the start of the pandemic, France had some of the highest levels of vaccine scepticism in the developed world.

In Greece, meanwhile, around 4,000 people gathered later Wednesday in central Athens to protest against new virus measures announced by Prime Minister Kyriakos Mitsotakis. 

"We say no!" and "Resign" chanted the demonstrators in protest at the measures being put in place for non-vaccinated people.

They include a requirement for anyone caring for the elderly in care homes to get jabbed or lose their job.