A 33-year-old woman from New Orleans, who was fully vaccinated, died Sunday after she was diagnosed with COVID-19.

Angelle Mosely was considered a breakthrough case, which the Louisiana Department of Health said accounted for less than 10% of COVID deaths last week.

Tara Mosely, Angelle’s mother, told WDSU, an NBC affiliate out of New Orleans, “She said 'I know I do not have COVID. I still can smell and taste. And I am vaccinated.' But when she got to the hospital, turns out she had it.”

Angelle first started feeling ill on Thursday and went to the hospital, where she was later diagnosed with COVID-19, WDSU reported. She was eventually released, but by the weekend, she was back in the hospital.

"Her neighbor brought her at 2 or 3 in the morning," Tara recalled. "She said, 'They will keep me because I have pneumonia and a high fever,'"

Angelle was a New Orleans business owner of Brave Beautique - a shop that specialized in fashions for plus-sized women.

The Mosely family told WDSU that they continue to encourage others to wear masks and to get vaccinated in addition to maintain a healthy lifestyle.

Tara said: "One of the things that I will say contributed to her death, Angelle was large for her age. She was obese. The variant that is out right now. It is showing us it is really serious. I saw this with my own child's life.”

Angelle is not the only case of a fully vaccinated person to die after contracting COVID-19.

A 65-year-old Napa County, Calif., woman who also was fully vaccinated died from COVID-19 in June, according to local officials. She had underlying medical conditions and died from complications of the virus after a prolonged hospitalization, KPIX, a CBS affiliate out of San Francisco.

The woman is considered the first breakthrough case of a COVID death of a fully vaccinated person. She tested positive for the U.K. variant, which causes more severe illness and is more transmissible.

At the time, Dr. Karen Relucio, Napa County Public Health Officer, said in a statement obtained by KPIX, “No vaccine is 100 percent effective but this does not diminish the urgency and importance of getting vaccinated, especially as more variant strains emerge.

“Vaccines provide exceptional protection against death and illness from the virus and all residents should continue to get vaccinated to protect themselves and others,” she added.

The European Medicines Agency said that evidence suggests that "both doses of a two-dose Covid-19 vaccine... are needed to provide adequate protection against the Delta variant A COVID vaccine is pictured here. Photo: AFP / Sergei GAPON