WESLACO – Sixteen asylum hopefuls are now showing signs of the flu and are under quarantine in California.

They were recently transferred from the Rio Grande Valley.

This latest “health alert” comes days after a migrant flu outbreak temporarily shut down the McAllen processing center.

Thirty-two migrants at the McAllen center were tested positive for the flu this week.

One of them, a 16-year-old, died Monday after he was moved from the McAllen facility to one in Weslaco after his diagnosis.

Border Patrol officials are now trying to figure out if any of the sick had contact with the teenager.

The migrants in California were moved due to overcrowding at the government facilities in the Valley.

The feds started flying them to San Diego last week.

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A Border Patrol spokesperson said in a statement:

"The family units are pre-screened in Rio Grande Valley for health concerns prior to being assigned to flights. If they present any symptoms of illness, they will not be placed on a flight, but rather will be provided medical treatment.  If no symptoms of illness are present, they will be assigned to a flight.  Upon arrival in San Diego, the individuals are screened again for health concerns.  If an individual is presenting symptoms of an illness at this second screening, the Border Patrol then seeks the necessary proper medical care.  It is possible that detainees may not immediately show symptoms of illness prior to getting on a flight.  Agents closely monitor all movement and conditions of the detainees in our custody."