The King of Thailand has taken a harem of 20 concubines with him into self-isolation at a grand hotel in southern Germany, it has been reported.

King Maha Vajiralongkorn, also known as Rama X, is believed to have booked out all of the Grand Hotel Sonnenbichl in Bavaria to self-isolate during the coronavirus pandemic.

German tabloid Bild reports the 67-year-old has booked out the entire hotel, with permission from the local district council.

It's not known if Rama X's fourth wife is currently staying at the hotel with him, however, 119 members of the royal entourage are thought to have been sent back to Thailand amid concerns they had contracted Covid-19.

Thailand's King Maha Vajiralongkorn sits on the throne next to Queen Suthida as he is officially crowned king at the Grand Palace in May 2019. King Maha, also known as Rama X, is thought to be self-isolating in Germany

King Maha Vajiralongkorn is said to have booked out the entirety of the Grand Hotel Sonnenbichl in Germany so he can self-isolate with a harem of 20 concubines, it's not known if his fourth wife is with him

The Thai regent has a second home in Germany where he spends much of his time, he is not thought to have made a public appearance in his home country since February.

News of the king's self isolation comes after it was revealed Malaysia's king and queen were placed under quarantine after seven palace staff members tested positive for coronavirus.

King Sultan Abdullah Sultan Ahmad Shah and his wife Tunku Azizah Aminah Maimunah Iskandariah have both tested negative for the infection, but will isolate for 14 days out of an abundance of caution the palace said.

Meanwhile the infected staff have been taken to hospital as officials try to work out the source of the infection. The palace is also being disinfected.

Sultan Abdullah Sultan Ahmad Shah and wife Tunku Azizah Aminah Maimunah Iskandariah will isolate themselves for 14 days after at outbreak of coronavirus at Malaysia's royal palace

Seven palace staff have been confirmed to have coronavirus and have been taken to hospital, while an investigation is underway into the source of the infection

The palace say the king and queen have tested negative but will isolate out of caution, while the palace is also disinfected (file image, hygiene workers in Malaysia)

Malaysia has more than 2,000 confirmed cases of coronavirus with 235 reported on Thursday, making it the hardest-hit country in Southeast Asia.

Some 21 people have died from the disease.

The majority of the country's infections have been linked back to an Islamic conference that happened at the Sri Petaling mosque back in February.

The event was attended by around 20,000 people, three quarters of whom were from Malaysia.

Other attendees were from Bangladesh, Brunei, the Philippines, Singapore and Thailand, and went on to spread the infection in their own home countries.

Last week Malaysia entered full lockdown to try to slow the spread of the virus, with people banned from leaving homes except for urgent needs.

Malaysia has the highest number of coronavirus cases of any Southeast Asian country, with most linked to an Islamic gathering last month with 20,000 attendees (file image)

Schools were shut, all but essential businesses closed, while foreign visitors were banned from coming into the country and Malaysian barred from leaving.

Police were initially tasked with keeping the lockdown in place, but soldiers were brought in after people began flouting the rules.

The measures were expected to last until the end of March, but were extended Wednesday until mid-April.

More than a third of the world's population - or 3billion people - are now thought to be under some kind of lockdown to help slow the spread of the virus.

India enacted the most widespread shutdown this week when it ordered all of its 1.3billion people to remain at home and only venture outside for emergencies.

Malaysia entered full coronavirus lockdown last week with all-but essential shops closed and people told to stay at home unless they need to venture out for emergencies

Police were initially deployed to deal with the outbreak but the military was brought in to help after people began flouting the rules. The lockdown is due to last until mid-April

China also locked down some 760million people as the virus spread, but is now starting to ease restrictions as new infections subside.

Globally, infections have topped 450,000 while deaths have topped 20,000 - with the World Health Organisation warning that we have not yet reached the peak.

Coronavirus first emerged in China towards the end of last year, before sweeping East to West across the globe.

Europe and the US are now the new epicentres of the virus, with more combined infections than anywhere else including China.

Italy alone, the hardest-hit western nation, has recorded more than 7,500 deaths - more than the whole of China.

Germany to issue coronavirus 'immunity certificates' to people who have recovered in a bid to bring their lockdown to an end

By Sebastian Murphy-Bates for MailOnline

'Immunity certificates' are set to be introduced in Germany as part of preparations for the country to cease its lockdown.

Researchers want to bring in the documents for citizens not at risk of contracting the novel coronavirus.

It comes as Chancellor Angela Merkel's handling of the Covid-19 pandemic has secured a boost in poll ratings.

Pictured: Medics treat a patient at Helmut-Schmidt-Airport in Hamburg as researchers prepare to issue immunity certificates

As part of Germany's fight against the virus, scientists are using antibodies in test participants to find out which of them have had the illness and healed, Der Spiegel reports.

The team plans to test 100,000 people at a time, issuing documentation to those who have built up an immunity.

They will then use the information gleaned from the testing to assess how and when the lockdown should conclude.

Researchers will utilise the data as they advise the government on when schools will be re-opened and mass gatherings permitted once again.

Chancellor Angela Merkel (pictured) has secured a boost in poll ratings over her handling of the crisis

The Helmholtz Centre for Infection Research in Braunschweig is overseeing the project.

It will conduct blood tests over the next few weeks to look for antibodies produced in carriers of the illness.

'Those who are immune can then be given a vaccination certificate that would, for example, allow them to be exempt from any (lockdown-related) restrictions on their work,' said project-leading epidemiologist Gerard Krause.

The tests will also offer a clearer look at how many people in Germany have contracted the coronavirus.