The annual World Aids Day was marked on Friday by international leaders, local communities and individuals across the globe.

Approximately 36.8 million people are living with HIV/Aids and the 1 December is used as an opportunity to “unite in the fight against HIV, to show support for people living with HIV, and to commemorate those who have died from an Aids-related illness”, according to the UK's National Aids Trust.

In Britain, Prince Harry and the actor Meghan Markle lent their support to a World Aids Day charity fair hosted by the Terrence Higgins Trust in Nottingham. Attending their first public event as an engaged couple, they were shown one of 48 UK Aids Memorial Quilts, which showcase different patchwork panels made by friends and lovers paying tribute to those lost to HIV/Aids.

In France, President Emmanuel Macron took an HIV test a visit at the Delafontaine Hospital in Saint-Denis, near Paris.

In Washington, US President Donald Trump issued a statement marking the date. But in a break with tradition which drew some criticism from the LGBT community, and unlike former presidents Barack Obama and Bill Clinton, Mr Trump did not mention specific minorities who were disproportionately affected by the epidemic in his proclamation.

Mariah Carey, DJ Khaled and Mario Lopez all performed in the 30th anniversary concert for World Aids Day in Los Angeles.

Mexico City illuminated several iconic monuments, buildings and public spaces in red, including the city Diana La Cazadora to honour the fight against Aids.

In Soweto, Johannesburg, the 21st South African Infantry Battalion marched to mark the day.

World Aids Day 2017: in pictures Show all 18 1 /18 World Aids Day 2017: in pictures World Aids Day 2017: in pictures World Aids Day - UK Prince Harry and Meghan Markle take part in a discussion with HIV consultant doctor Laura Waters during their visit to the Terrence Higgins Trust World AIDS Day charity fair Getty Images World Aids Day 2017: in pictures World Aids Day - Brazil Red balloons are released to mark the World AIDS Day in Sao Paulo REUTERS World Aids Day 2017: in pictures World Aids Day - France A nurse takes blood for a HIV test for French President Emmanuel Macron as he visits the Delafontaine Hospital Reuters World Aids Day 2017: in pictures World Aids Day - India A student displays his face and hand painted with messages in Chandigarh, India REUTERS World Aids Day 2017: in pictures World Aids Day - UK Prince Harry and Meghan Markle arrive at the Nottingham Contemporary to attend a Terrence Higgins Trust World AIDS Day charity fair, on their first official engagement together. PA World Aids Day 2017: in pictures World Aids Day - South Africa Members of the 21 South African Infantry Battalion march to mark the World AIDS Day in Soweto AP World Aids Day 2017: in pictures World Aids Day - India A childhas their face painted to spread awareness about HIV/AIDS on World AIDS day in Jammu Rex Features World Aids Day 2017: in pictures World Aids Day - Kenya Free HIV testing booths are installed during the World AIDS Day event at University of Nairobi AFP/Getty Images World Aids Day 2017: in pictures World Aids Day - China Students use candles to form a large ribbon at a primary school in China REUTERS World Aids Day 2017: in pictures World Aids Day - India Commuters walk past a message on the World AIDS Day near Howrah Bridge, on the bank of river Ganges in Calcutta EPA World Aids Day 2017: in pictures World Aids Day - India An volunteer lights candles placed on the ground in the shape of a red ribbon during an awareness rally on the eve of World Aids Day in Agartala AFP/Getty Images World Aids Day 2017: in pictures World Aids Day - China Students of Yangzhou University Medical College standing in the shape of a red ribbon VCG via Getty Images World Aids Day 2017: in pictures World Aids Day - China Students hold red ribbons at a high school in Hefei, Anhui province, China REUTERS World Aids Day 2017: in pictures World Aids Day - Mexico The "Diana La Cazadora" monument is illuminated in red on the eve of World Aids Day in Mexico City AFP/Getty Images World Aids Day 2017: in pictures World Aids Day - India Sand art on the Bay of Bengal Sea's eastern coast beach at Puri. Sand artist Sudarshan Patnaik created the piece on the eve of World AIDs Day . Rex Features World Aids Day 2017: in pictures World Aids Day - India People hold candles around a ribbon during a ceremony to create awareness about HIV/AIDS in Ahmedabad, India REUTERS World Aids Day 2017: in pictures World Aids Day - Ukraine A woman has a HIV/AIDS blood test in a mobile laboratory in Ukraine AP World Aids Day 2017: in pictures World Aids Day - China The two towers of the Global Harbor shopping mall in Shaghai are illuminated with huge red ribbons Rex Features

At the University of Nairobi in Kenya, free testing booths were provided on campus for students to use.

The two towers of the Global Harbour shopping mall, in Shanghai, were lit to make the images of a giant red ribbon.