The conservative US writer and commentator Bre Payton has died at the age of 26 after falling ill.
A friend, Morgan Murtaugh, found her unconscious on Thursday. She died in hospital where she was found to be suffering from H1N1 flu and meningitis.
Online magazine The Federalist, which Payton wrote for, said she "brightened the lives of everyone around her".
Payton made several appearances for Fox News, and also appeared on other major channels, including the BBC and CNN.
Thank you everyone for your prayers. It is with a heavy heart that I type this. Unfortunately Bre has passed. Please send prayers to her family. Rest in paradise you beautiful soul. https://t.co/pMFCZNaqKl— Morgan Murtaugh (@morganmurtaugh) December 28, 2018
"She fought strong and lived a life worth noting in the books," a memorial page said.
"We are so incredibly honoured to have known this wonderful human being."
Meghan McCain, the daughter of the late US Senator John McCain and a prominent political commentator, paid tribute.
Ben and I are absolutely gutted and horrified by this news. Our prayers for @Bre_payton and her family. We are less without her - in every possible way. A wonderful, fearless, vibrant, intelligent young woman. Sending prayers to all of her family and friends during this darkness. https://t.co/K5nfRiB7gy— Meghan McCain (@MeghanMcCain) December 28, 2018
H1N1 is an influenza virus subtype. A new strain of it that was declared a pandemic by the World Health Organization in 2009 became popularly known as swine flu. Children and young adults have been particularly affected.