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Residents of New South Wales, Australia’s most populous state, are facing tighter restrictions after daily Covid cases topped 100 for the second time since the current outbreak started a month ago.

State Premier Gladys Berejiklian said the three-week lockdown in Sydney had not quashed infections and stricter stay-at-home measures were needed in parts of the city.

Non-essential retail and construction sites are being shut and a further 600,000 people will be unable to go to work.

Cases have also risen in the neighbouring state of Victoria, raising concerns that the lockdown there may be extended.

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So, if you are an adult who has been fully vaccinated through the NHS you will not need to self-isolate when returning from amber list countries from Monday, 19 July (with the exception of France). Those aged under 18 also won't have to quarantine.

But each country has its own rules to follow - both at the border and once you make it to your hotel, villa or campsite.

Some of the key rules in place in seven destinations popular with UK holidaymakers are set out here.

But rules can change quickly, so it's important to check the Foreign Office guidance, external and government and tourist websites for your destination.

Last week, it was announced that fully vaccinated arrivals to the UK from amber-list countries will not have to quarantine from Monday.

However, before that change could even come into effect, another rule change was announced - namely that arrivals from France - an amber-list country - do not qualify for this quarantine exempetion.

These changes have left some travellers feeling confused.

So, what are the current rules for travelling to green, amber and red list countries?

The BBC explainers team has compiled this handy guide.

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Vinicius Alexis da Cruz felt a wave of relief when his turn came to take the Covid-19 vaccine.

As the virus ravaged Brazil, the 32-year-old had spent more than a year risking his life, working as an Uber driver. Diabetes and high blood pressure made Vinicius especially vulnerable. But he kept driving passengers across São Paulo to make ends meet.

"I was really scared of getting sick," says the father of one, who lost his job as a sports commentator before the pandemic hit. "But I was taking the risk because I had to keep working."

Vinicius got his first dose of CoronaVac in late May. But when the time came to get his second jab, he was turned away. "Nobody had a vaccine for me," he said. "I went to five clinics near my house. I couldn't find it anywhere. The same thing happened the next day, and the day after that."

He scoured the city for four days before he got his hands on a second shot. "Finally, I'm fully vaccinated. But it became really clear to me just how short we are on vaccines."

Like Vinicius, millions are struggling to get their second shot of the Covid-19 vaccine, dealing a blow to Brazil's already troubled vaccination campaign.

Read more about the situation in Brazil here.

England's vaccine rollout is well under way and the Covid jab is now being offered to all over 18s. So what has uptake been like for young people?

BBC London's Jamie Moreland explores why some are choosing to accept or refuse the jab and explores vaccine hesitancy in his own family.

Hugh Schofield
BBC News, Paris

There's been no official reaction from the French government to the announcement that vaccinated travellers from France to the UK will not be exempt from quarantine, like other amber countries.

The UK government's rationale for the restriction is concern about the growth of the Beta variant in France.

However here in France, health officials are far more pre-occupied about the Delta variant – which is beginning to spread at an alarming rate.

The Beta variant accounts for about 10% of new infections across the country – a figure that appears to be rising slightly -- but that includes the Indian ocean territories of Reunion and Mayotte where Beta is near universal.

The French government will certainly be pushing for explanations from London about the reason for the toughening policy, which has caught the tourist business by surprise.

Ironically France has just made it easier for vaccinated visitors to travel from the UK, by removing the need for them to take a negative test.

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The chief of the Tokyo Olympics accepts athletes are "probably very worried", after a Games-related organiser became the first person to test positive for Covid-19 in the athletes' village.

The case, who is now quarantining in a hotel for 14 days, is one of 15 Games-related cases reported on Saturday.

The organiser tested negative upon arrival in Japan before returning a positive test in the village screening.

The organisers have previously said the village "must be the safest place, external".

"Athletes who are coming to Japan are probably very worried. I understand that," says Games chief Seiko Hashimoto. "That is the reason why we need to make full disclosure."

US President Joe Biden has warned that the spread of Covid-19 misinformation on social media is "killing people".

He was responding to a question from a reporter about the alleged role of "platforms like Facebook" in spreading falsehoods about vaccines and the pandemic.

The White House has been increasing pressure on social media companies to tackle disinformation.

Facebook says it is taking "aggressive action" to protect public health.

"They're killing people," the president told reporters at the White House on Friday. "The only pandemic we have is among the unvaccinated."

Fully jabbed travellers returning to England and Wales from France will still have to quarantine from Monday, despite it being an amber list country.

James Miles from West Sussex says he hasn't seen his girlfriend Sophie since 1 January because of the coronavirus pandemic.

He says his plans to see her next week are now in jeopardy, despite him and Sophie both being fully jabbed.

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Meanwhile, Bulgaria has banned UK travellers from entering the country due to the coronavirus pandemic.

The south-east European nation has put the UK on its high risk "red zone list".

Other nations added to Bulgaria's red list include Cyprus, Spain, Fiji and Kuwait.

France is tightening entry rules on people arriving from several European countries - including the UK.

From tomorrow, travellers who have not been fully vaccinated will have to prove they've tested negative for coronavirus in the last 24 hours.

Previously the window was 72 hours.

Those who are fully vaccinated with a jab recognised by the European Medicines Agency (Pfizer/BioNTech, AstraZeneca, Moderna or Johnson & Johnson) will not be required to show a test.

The UK is currently on France's orange list, the other five - Spain, Portugal, Cyprus, Greece & the Netherlands - are on the green list, but are "under surveillance".

BBC Breakfast

We've just mentioned that flu vaccines and nasal sprays will be offered this winter to children aged two to 16 in England, amid the double threat of Covid and influenza.

Asked about the prospect on BBC Breakfast, Geoff Barton - general secretary of the Association of School & College Leaders - says some of the ASCL members may be dreading the prospect.

He says “some of the people I represent, school and college leaders, their hearts will be sinking” because they might worry they are being asked to “set up field hospitals”.

But he adds they will only need one person to deal with administration and liaise with parents, as well as a large space such as a sports hall, with medical staff taking responsibility for the rest.

“It’s going to be safer for young people and staff if we have a flu epidemic as is being predicted,” Barton says.

“It finally feels as if we are giving priority to educational continuity for those young people so they can start in September with a sense that the adults in the room are doing everything they can to look after them, right up to the age of 16.”

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Free flu vaccines will be offered to children aged two to 16, as well as people aged 50 and over or in "at-risk" groups this winter, as the UK faces the double threat of Covid and influenza.

Experts hope for a record-breaking rollout reaching more than 35 million people, including more teenagers than ever before.

Last winter there was a high uptake, with 19 million doses given.

Under-16s will be offered the vaccine in nasal spray rather than as a jab.

An expanded secondary school programme means, for the first time, pupils up to Year 11 (aged 11 to 16) will be invited, not just those in their first academic year - Year 7 - like last winter.

You can read more about the flu jab plan, including who will be eligible for a free vaccine, here.

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While the rules in Wales are easing slightly today, in England it is the final weekend before almost all restrictions end.

From Monday, social distancing rules will end, nightclubs will reopen and there will be no limits on attendees at weddings, funerals, festivals and sports events.

You can read a about what’s changing in England on Monday here.

And you can read tips on how to avoid catching Covid indoors here.

Six people can now meet in private homes in Wales, and a law limiting the number of people meeting outside is being scrapped as the country's lockdown rules ease further.

The Welsh government says its rule relaxation, external gives outdoor events "flexibility around social distancing" as Wales moves into alert level one.

Organised indoor events can also start taking place with up to 1,000 people seated and 200 standing from Saturday.

The easing comes despite Covid rates rising to 156 cases per 100,000 people.

The rise in the more transmissible Delta variant has seen infection rates rise but hospital rates of Covid patients remain relatively low compared to the pandemic height in December and January.

You can read more about the situation in Wales here.

BBC Breakfast

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As we reported earlier, quarantine-free travel from France to the UK has been suspended before it even came into force due to concerns about the spread of the Beta Covid variant.

That has prompted some people to question why it hasn't just been added to the UK's red list.

One theory is that the number of entry and exits points between France and the UK make hotel quarantine logistics "impossible".

Gemma Antrobus, of the Association of Independent Tour Operators, tells BBC Breakfast that people will "make the decision on what's best for them" over travelling from Monday.

She adds: "I do think that it just doesn't help with the number of entry and exit points to France, and it's possibly why France didn't go directly on to a red list, because of those different entry and exit points - being able to take Eurostar across on the train, being able to go from the ferry ports, and also being able to fly.

"The ability to put in hotel quarantines at those points or arrange logistics around them is possibly the reason why it didn't hit red straight away, because it's just going to be logistically impossible to do that by Monday."

Today Programme
BBC Radio 4

The government may have to reimpose lockdown restrictions if Covid cases continue to rise over the summer and into the autumn, former health secretary Jeremy Hunt has warned.

Hunt, who is now chairman of the Commons Health and Social Care Committee, says the situation is "very serious".

"The warning light on the NHS dashboard is not flashing amber, it is flashing red," he tells Radio 4's Today programme.

"Covid hospital patients are doubling every two weeks. That means we are heading for 10,000 Covid hospital patients by the end of August, which is about 20 times higher than this time last year. It is a very serious situation.

"I think coming into September we are almost certainly going to see infections reach a new daily peak going above the 68,000 daily level, which was the previous daily record in January.

"If they are still going up as the schools are coming back I think we are going to have to reconsider some very difficult decisions. How we behave over the next few weeks will have a material difference."

Today Programme
BBC Radio 4

We've got more from Sage member Prof John Edmunds now, who says the Beta variant of the coronavirus spreading in France may evade vaccines.

It comes after the government said travellers returning from France - unlike other amber list destinations - must continue to self-isolate even if they are fully vaccinated.

Prof Edmunds says ministers are right to be concerned.

"The Beta variant has remained a threat throughout," he tells Radio 4's Today programme.

"It is probably less infectious than the Delta variant that is spreading here in the UK at the moment.

"Where it has an advantage is that it is able to escape the immune response to a better extent.

"As the population here becomes more and more immune, the conditions are right then for the Beta variant to get an advantage, so I can understand the concern.

"Of the variants that are out there and are known about, that one has always been a threat to us."

Today Programme
BBC Radio 4

The UK is facing a prolonged period with a high level of coronavirus infections, a scientist advising the government has told the BBC.

Prof John Edmunds, of the London School of Hygiene and Tropical Medicine and a member of the Scientific Advisory Group for Emergencies (Sage), says that with the lifting of lockdown restrictions in England on Monday means the disease will continue to spread.

"I think this wave of the epidemic will be quite long and drawn out," he tells Radio 4's Today programme.

"My hunch is that we are looking at a high level of incidence for a protracted period right through the summer and probably through much of the autumn.

"We started easing restrictions before everybody was vaccinated. That is going to lead to infections in the unvaccinated people - primarily in this instance the younger individuals. It is inevitable that that was going to happen."

Prof Edmunds adds that cases could reach 100,000 a day within weeks.

Image source, Reuters

Travel companies have not welcomed the news that arrivals from France to England and Wales will have to quarantine, regardless of their vaccine status.

Tim Alderslade, chief executive of industry group Airlines UK, says the “random rule changes make it almost impossible for travellers and industry to plan ahead, and can only further undermine consumer trust at the very peak of the summer season".

Travel trade body Abta says the changes will delay "any meaningful recovery for the industry", adding that financial support needed to be given to the sector.

Johan Lundgren, chief executive of EasyJet, adds the government is "making it up as they go along and causing confusion and uncertainty".

"It is not backed up by the science or transparent data and this move pulls the rug out from under our customers who have already travelled to France or who are booked to travel there and so it is them I feel for," he says.

Eurotunnel describes the announcement from the government s "disappointing... so close to the school holidays and so soon after they had confirmed that travel to France was safe".