In pointing to “sobering’’ statistics showing that the number of homeless people dying in Los Angeles County nearly doubled from 2013-18, the Board of Supervisors voted this week to deploy health care workers to encampments and shelters to assess health needs among the homeless.

Supervisors Mark Ridley-Thomas and Hilda Solis co-authored the motion calling for short-term strategies to help reverse the trend.

“This report is tragic, and reflects a true state of emergency on the streets of our community,’’ Ridley-Thomas said. “It is unconscionable and inhumane for society to continue to turn a blind eye to this plight.’’

Solis said the data—released Tuesday by the Department of Public Health(DPH)—should spur others, including private sector players, to get involved.

“This isn’t just the county’s responsibility. It’s a human responsibility,’’ Solis said.

The county’s analysis of death certificates and coroner’s records found that 1,047 people identified as homeless died in 2018, up from 536 in 2013. To make clear that the dramatic increase wasn’t just due to a growing number of people experiencing homeless, DPH Director Barbara Ferrer told the board that the rate of mortality—the percentage of homeless individuals dying—had also spiked by more than one-third over the period.

“Homeless (people) are in fact dying at a higher rate because they’re homeless,’’ Ferrer said.

The average age of death was 51, compared with 73 years old for the general population.

Alcohol or drug abuse was the leading cause of deaths, which accounts for 27 percent of the total when longer-term effects, such as cirrhosis of the liver, are considered along with overdoses. The number of overdoses increased by 50 percent over the five-year period.

Ferrer said roughly 25 percent of the people receiving substance abuse treatment from the county are homeless, but that many people on the streets still need help.

The next most common cause was coronary heart disease, with some of the increase related to an aging homeless population, Ferrer said. Coronary heart disease is the leading cause of death among Los Angeles County residents in general.

Other causes include traffic deaths at 9 percent, homicides at 6 percent, and suicides at 5 percent.

While the ultimate solution is housing, Ferrer said other strategies are needed now. In addition to sending workers out to gather more information, the DPH report also recommended beefing up traffic control measures around homeless encampments, as well as analyzing the causes of death among formerly homeless people placed in permanent supportive housing to better inform the delivery of services.

Solis said she wanted more information.

“The question for me is where, where is this happening?’’ Solis said. Supervisor Kathryn Barger asked that death reviews consider root causes, noting that mental illness often plays a role, even if it is not identifiable in an autopsy. Barger has pushed for changes in state law that would redefine “grave disability,’’ allowing county workers to intervene to get medical help for individuals in severe need but resisting treatment.

Supervisor Janice Hahn said she wanted to cross-reference the deaths with any contacts made by county outreach workers to assess whether the strategies being employed to combat homelessness are actually helping.

“This sort of has a shock value … that people are dying on our streets,’’ Hahn said.

Pulling together even initial preliminary data was difficult, Ferrer told the board.

“There’s nothing on a death certificate that says that you’re homeless,’’ the director said.

Hahn separately proposed extending a state of crisis related to emergency shelter and directing Chief Executive Officer Sachi Hamai to designate more county public facilities as homeless shelters.

“It’s just a snail’s pace for us to build shelter,’’ Hahn said, adding that no one has come up with a strategy to deal with NIMBY neighborhood groups. Barger said the problem wasn’t money but a lack of cooperation from cities in building out shelters.