Controversial gay Kenyan author Binyavanga Wainaina has revealed that he is HIV-positive and 'happy about it'.

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The author, who is now based in Germany, used the occasion of the World Aids Day on Thursday to disclose his status, adding that he was happy.

The 45-year-old simply wrote on his twitter account: “I am HIV Positive, and happy.”

The tweet quickly elicited mixed reactions from Twitter users, some castigating him and others lauding him.

“This writer, Binyavanga Wainaina, knows how to get you to sit down, shut up and think. One of the bravest most audacious people I know," Nnedi Okorafor reacted.

"Proud of you hope the rest of the public can also come out spreading positive vibes like you do;" Linda Adongo wrote.

"Not wearing a condom is a decision. The results are heartbreaking. Your purpose is encouraging condom use," RockyTayeh said.

"Those encouraging you here r hypocrites, they, like me r wondering, WTF, will your dropping of bombs ever end?" another one reacted.