An Indiana mother is using her grief to warn other parents about a bacterial infection that killed her son within hours. "This is not your typical everyday flu," said Ashlee Dahlberg of Haemophilus influenzae, also known as "H. flu." Doctors say it's a bacterium, not a virus and it's extremely deadly. Most children are vaccinated against when they're babies. "We later found out that he contracted invasive Hib, which is the more aggressive form of Hib. Anybody that contracts it usually dies within 24 hours," Dahlberg said. She said it all started when her 8-year-old son Liam came home from school with a headache in April. By the next morning, he was being rushed to the hospital. Her normally lively child became delirious at some moments. STORY: https://www.wthr.com/article/news/health/lowell-indiana-mom-haemophilus-influenzae-bacteria-son-liam-death-vaccination/531-8361bd07-4d2c-433a-8b30-5cb3651fc48b