Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:
Selena Gomez Had Kidney Transplant Earlier This Year
Pop star Selena Gomez has revealed that she received a new kidney from her best friend earlier this year.
The transplant was necessary due to the 25-year-old singer's lupus. In October 2015, she disclosed her lupus diagnosis and said she was undergoing chemotherapy to treat it, People reported.
In an interview with the magazine, Gomez said the reason she stepped back from her career over the summer was because she was recovering from the kidney transplant.
The kidney was donated by longtime friend Francia Raisa, an actress best known for her role in The Secret Life of the American Teenager, People reported.
In August 2016, Gomez took a career break because she was experiencing "anxiety, panic attacks and depression" associated with her lupus diagnosis.
Eight Deaths at Florida Nursing Home Under Investigation
The death toll has reached eight at a Florida nursing home that lacked air conditioning after Hurricane Irma, and three agencies have launched investigations into the tragedy.
According to CNN, staff members at The Rehabilitation Center at Hollywood Hills, in Hollywood, say they had tried to prepare for Irma. A working power generator was in place and the home had stocked up on a week's worth of food and water.
But after a tree fell down on a transformer that powered the air conditioning system, staffers struggled to keep residents cool by using fans and portable air conditioner units, CNN reported.
Ellie Pina visited her mother at the nursing home days before residents were evacuated by emergency crews on Wednesday.
"They were trying to get them all together so they could be able to breathe," Pina told CNN.
And Jeffrey Nova said he'd been calling the nursing home to check up on his mother, but received no answer. On Wednesday he learned from a news reporter that his mother, Gail Nova, was among the dead.
"I'm not quite clear on how this happened," Nova told CNN.
Lacking a central air conditioning system, patients were kept in hallways near portable cooling units in the days during and after Irma.
Early Wednesday morning the nursing home sent out its first 911 call, with one patient in cardiac arrest. That was followed an hour later by a second call regarding a resident who was having trouble breathing. More EMS crews were sent over after a third call was received, the City of Hollywood said in a statement.
When the nursing home was fully evacuated on Wednesday morning, one resident was dead and the body already taken to a funeral home, three more were found dead on the facility's second floor, and four more died after being taken to hospitals.
The exact causes of death are still to be determined.
On Wednesday, Florida Gov. Rick Scott issued an order to prevent the nursing home from admitting new patients.
"I am going to aggressively demand answers on how this tragic event took place," he said in a statement, CNN reported. "If they find that this facility was not meeting the state's high standards of care, they will be held accountable to the fullest extent of the law."
"We are devastated by these losses," nursing home administrator Jorge Carballo said in a statement, CNN reported. "We are fully cooperating with all authorities and regulators to assess what went wrong and to ensure our other residents are cared for."
He said the facility had immediately contacted Florida Power & Light on when repairs might be made to restore electricity.
For their part, city and state officials said they'd reached out to the nursing home urging them to call 911 if management thought there were health and safety issues.
"When asked if they had any medical needs or emergencies, [they] did not request assistance or indicate any medical emergency existed," Hollywood Hills Mayor Barbara Sharief said in a statement.
In a statement, Richard Beltran, a spokesman for Florida Power & Light, said: "What we know now is that a portion of the facility did, in fact, have power, that there was a hospital across the parking lot from this facility and that the nursing home was required to have a permanently installed operational generator."
According to CNN, the nursing home has been cited in the past for safety violations, including two for not following generator guidelines in 2014 and 2016. In both those cases, the facility did correct those issues, CNN said.
San Diego Boosts Efforts to Fight Hepatitis A Outbreak
Officials have intensified containment efforts meant to halt a hepatitis A outbreak in the San Diego area that has caused at least 16 deaths to date.
There have been at least 421 known cases, including 292 hospitalizations, since last November. A public health emergency was declared by San Diego County on Sept. 1, ABC News reported.
Stepped-up containment efforts range from vaccination and street cleaning to distributing flyers and possible temporary housing for homeless people, who have borne the brunt of the outbreak.
New sanitation measures introduced Monday by the city include hiring a private contractor to spray the streets with a bleach and water solution to kill bacteria, installation of outdoor hand washing stations, and designating 14 bathrooms that will be open 24 hours a day for use by homeless people, ABC News reported.
Hepatitis A suppresses liver function and can be deadly for people with weakened livers. The virus is easily spread between people, usually through fecal matter.
Larry King Reveals Lung Cancer Diagnosis
Larry King has revealed that he had surgery for lung cancer earlier this summer.
The stage 1 cancer was detected during a routine X-ray, King said in a television interview, CBS News reported.
"I have a checkup every year. I've gone through a lot in my life -- I've had a heart attack and heart surgery. Part of my checkup is the chest X-ray, and that is the protocol. I do it every year... it was always normal. Then the doctor says, 'I see a little spot here. Let's do a CAT scan,' so they do a CAT scan, and they say, 'Let's do a PET scan' I don't think there are any other scans," King said in the interview.
He had the surgery in July at Cedars Sinai in Los Angeles. He will have a chest X-ray every six months.
King was a smoker until his heart attack.
"Thirty years later, I said to the doctor, 'Is this connected with that?' 'Absolutely,'" King said.
Lady Gaga Has Fibromyalgia
Lady Gaga has fibromyalgia, she disclosed on Twitter.
She also said more details about her struggle with the disorder will be revealed in her upcoming Netflix documentary "Lady Gaga: Five Foot Two," CBS News reported.
Fibromyalgia as "a disorder characterized by widespread musculoskeletal pain accompanied by fatigue, sleep, memory and mood issues," according to the Mayo Clinic.
In her Tweet, Gaga said she has been trying to determine the best ways of dealing with the disorder, and also said she wants to connect with others who have fibromyalgia, CBS News reported.
Experts Urge Caution Over Study About Flu Vaccination and Miscarriages
A study that appears to connect flu vaccination during pregnancy and miscarriages should be viewed with caution, experts say.
Researchers found that 17 of 485 miscarriages they studied involved women who had two consecutive annual flu shots that included protection against swine flu, the Associated Press reported.
However, vaccine experts believe the findings may be due to older age and other miscarriage risks, not the flu shots.
The study was published in the journal Vaccine after being rejected by two other medical journals. Vaccine Editor-in-Chief Dr. Gregory Poland, who is director of vaccine research at the Mayo Clinic, told the AP he doesn't believe flu shots caused the miscarriages.
There is no reason to change the federal government recommendations that all pregnant women get a flu shot, said health officials, who added that the flu itself is a much greater threat to women and their fetuses.
Two of the study authors were Centers for Disease Control and Prevention researchers. The CDC alerted the American Congress of Obstetricians and Gynecologists about the study so its members could prepare for a potential surge of anxiety among pregnant women, the AP reported.
"I want the CDC and researchers to continue to investigate this," said Dr. Laura Riley, a Boston obstetrician who heads a committee on maternal immunization. "But as an advocate for pregnant women, what I hope doesn't happen is that people panic and stop getting vaccinated," she told the AP.
Some of the study authors are conducting a larger study with more recent data to determine if a possible connection between swine flu vaccine and miscarriage can be confirmed, according to study author James Donahue, of the Marshfield Clinic Research Institute in Minnesota.
He said the earliest that results would be available is next year, the AP reported.
In a statement following publication of the study, the American College of Obstetricians and Gynecologists said: "ACOG continues to recommend that all women receive the influenza vaccine. This is particularly important during pregnancy. Influenza vaccination is an essential element of prenatal care because pregnant women are at an increased risk of serious illness and mortality due to influenza. In addition, maternal vaccination is the most effective strategy to protect newborns because the vaccine is not approved for use in infants younger than six months."