Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:
Millions Being Donated for Boston Bombing Victims
Donations are pouring in as people hold fundraisers and set up online crowd-funding sites to help the victims of the Boston Marathon bombing pay for their medical expenses.
One Boston city fund has already collected more than $23 million in donations from individuals and corporations, the Associated Press reported.
But it's not clear if the donations, along with health insurance other sources, will be enough to cover the medical bills for the more than 260 people who were wounded in the attack. At least 15 victims lost limbs, and other injuries include head wounds and shrapnel-shredded tissue.
The cost of leg amputation is at least $20,000, rehabilitation therapy for amputees is tens of thousands of dollars, and the cost of an artificial leg can range from $7,200 to as much as $90,000 , according to the AP.
Mexican Cucumbers Linked to Salmonella Outbreak: FDA
A salmonella outbreak that has sickened at least 73 people in 18 states has been linked to cucumbers from two Mexican growers, the U.S. Food and Drug Administration says.
The agency said that cucumbers from the two growers are being stopped at the border, and the U.S. Centers for Disease Control and Prevention said that all of the contaminated cucumbers are now off the market, USA Today reported.
The first cases of the salmonella outbreak began in January and the last known case began April 6, according to Lola Russell, a spokeswoman for the CDC. She said no deaths have occurred in the outbreak, but 27 percent of people who became ill have been hospitalized.
The tainted cucumbers were linked to Daniel Cardenas Izabal and Miracle Greenhouse of Culiacn, Mexico. The cucumbers were distributed in the U.S. by Tricar Sales of Rio Rico, Ariz., USA Today reported.
HIV Vaccine Study Halted
A large study of an experimental HIV vaccine has been halted because the shots aren't preventing infection, the U.S. National Institutes of Health said Thursday. HIV is the virus that causes AIDS.
The clinical trial included about 2,500 people, mostly gay men, in 19 cities. Half of the participants were given the vaccine developed by the NIH and half received placebo shots, the AP reported.
A safety review found that slightly more people who had received the vaccine later became infected with HIV. The reasons for this aren't clear.
While the vaccinations are being stopped, the NIH said it will continue to track the study participants' health, the AP reported.
Numerous attempts to develop an HIV/AIDS vaccine have failed.