Today's Google Doodle shows an image of Nkosi Johnson – a South African child who was born with HIV/AIDS and died of the disease aged 12.
HIV stands for Human Immunodeficiency Virus and is a disease which targets the immune system.
If treatment isn't started soon enough, It stops the body from being able to fight infections and disease.
At the time of his death in 2001, Nkosi was the longest-surviving child born HIV-positive in South Africa.
Today, February 4, would have been his 31st birthday and Google are celebrating his short life.
When South African broadcaster SABC3 released its show ‘Great South Africans’, Johnson was ranked fifth and Nelson Mandela called him “an icon of the struggle for life”.
Here is everything you need to know about the child who changed the perceptions of HIV/AIDS.
Who was Nkosi Johnson?
Johnson was born Xolani Nkosi on February 4 1989 to an HIV-positive mother and did not know his father.
When his mother could no longer take care of him, he was adopted by Johannesburg public relations officer Gail Johnson.
In 1997, the same year his mother Daphne died, Johnson hit the headlines when he was refused entry to a school because he was HIV-positive.
As soon as his HIV status was known to the school, parents and teachers opposed him attending.
“Mommy Gail went to the school, Melpark Primary, and she had to fill in a form for my admission and it said does your child suffer from anything, so she said yes: Aids,” Nkosi said in his famous speech in 2000.
“My mommy Gail and I have always been open about me having Aids. Then she phoned the school, who said we will call you and then they had a meeting about me.
“Of the parents and the teachers at the meeting, 50% said yes and 50% said no.”
Gail went public and complained.
She won her case, and Nkosi was able to go to school.
In July 2000, Nkosi had his big moment.
At the 13th International Aids Conference in Durban, South Africa, 11-year-old Nkosi addressed 10,000 delegates and brought them to tears.
“Care for us and accept us – we are all human beings,” he said at the conclusion of his speech.
“We are normal. We have hands. We have feet. We can walk, we can talk, we have needs just like everyone else. Don’t be afraid of us – we are all the same.”
When he died on June 1 2001, thousands of mourners attended his funeral in Johannesburg.
Nelson Mandela told reporters: “It’s a great pity that this young man has departed.
“He was exemplary in showing how one should handle a disaster of this nature.
“He was very bold about it and he touched many hearts.”
Nkosi’s story changed the way people viewed HIV/AIDS.
In honour of his bravery, the International Children’s Peace Prize was created by the KidsRight organisation in 2005.
Every year, the winner of the prize is given a “Nkosi” statuette for promoting children’s rights.