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Dr. Anthony Fauci warned Sunday that even if a COVID-19 vaccine becomes available, it still may not yield herd immunity.In an interview with the Aspen Institute on Sunday, Fauci — the U.S.'s top infectious disease expert — said he would settle for a vaccine that is between 70 and 75% effective."I doubt seriously that any vaccine will ever be a hundred percent protective. The best we've ever done is measles, which is 97 to 98% effective. That would be wonderful if we get there. I don't think we will," Fauci said. "I would settle for 70, 75% effective vaccine because that would bring you to that level of would-be herd immunity level."But a CNN poll says one-third of Americans do not plan to get a vaccine if it becomes available. Fauci said Sunday that if those figures hold true and a potential COVID-19 vaccine is only 75% effective, the U.S. population would not reach the herd immunity threshold that would kill the virus."That's one of the reasons why we have to make sure we engage the community as we're doing now to get community people, to help us for people to understand that we are doing everything we can to show that it's safe and that it's effective," Fauci said. "And it's for the good of them as individuals and in society to take the vaccine."Three coronavirus vaccines are expected to be studied in large-scale clinical trials in the next three months.Herd immunity comes when a sufficient portion of a population is immune to an infectious disease. That can come either come through prior illness or vaccination, making the disease unlikely to spread further. 1594

EL CAJON (CNS) - A Santee man accused of in the death of his infant daughter pleaded not guilty today to charges of murder and child abuse. Daniel Charles Marshall, 34, was arrested and charged last week in connection with the April 25 death of 7-month-old Hailey Marshall.Paramedics responding to a medical emergency call in the 8600 block of Paseo Del Rey in Santee on April 22 found the child in medical distress, Lt. Thomas Seiver said. She was pronounced dead at a hospital three days later of injuries that included skull fractures, prosecutors said.The circumstances of the death ``warranted further investigation, resulting in the (sheriff's) child abuse unit responding,'' according toSeiver. ``As the investigation progressed, the homicide unit responded and assumed responsibility of the investigation.'' Marshall is being held in lieu of million bail. 874

EL CAJON, Calif. (KGTV) — A gas leak in the East County forced several businesses to abruptly close Friday, as crews worked to stop the leak.The gas leak occurred North Marshall Ave. and Petree St. at about 12 p.m. when crews with Helix Water District struck a gas pipe while installing a communications line, according to El Cajon Fire Department.A representative with the water district said HWD personnel arrived at the scene after the rupture had occurred and are not responsible for the damage.Crews evacuated a nearby shopping center, where customers at the Black Bear Diner were given five minutes to leave the area. The leak also forced a nearby Rock Church and school to evacuate.For four hours, several blocks were closed to motorists and MTS trolley and bus service were impacted in the area.SDG&E has since stopped the leak by pinching off a section of the pipe in another area. Crews plan to take an additional two hours to repair the damged section of the gas line.No injuries were reported. 1017

EL CAJON, Calif. (KGTV) -- Neighbors say two elderly residents of the Lincoln Palms Apartment in El Cajon were taken to the hospital Wednesday, after an explosion on Lincoln Avenue. New resident Jorge Limon told 10News Reporter Rina Nakano he and his grilfriend Samantha were unpacking when they noticed an odd smell. Later, they heard what sounded like two explosions. "We thought somebody threw a table out of the window or something. But then we saw the smoke and fire," Limon said, adding that he immediately grabbed his fire extinguisher to help.  The explosion happened on the first floor of the building around 8 p.m., just below Limon's new apartment.Fire crews arrived four minutes after the 911 call, but were surprised to see that the flames were already out when they arrived. With his extinguisher, Limon was able to put out the flames. The explosion shattered the windows of the downstairs unit, leaving the curtains and glass all around the pool. Inside Limon found the two elderly residents, who he said both suffered injuries. "They both went ot the burn center, which means they had enough burns to where it was a concern," said Heartland Fire and Rescue Battalion Chief Bent Koch. San Diego Gas & Electric, El Cajon Police and several other agencies are investigating what caused the explosion. Limon told 10News his fire extinguisher was no accident. "I made a big deal to bring it," he said. "I'm glad I did, because if it weren't for this bad boy, God knows what would have happened."10News Reporter Rina Nakano shot a Facebook live explaining the scene. You can watch below:  1705

EL CAJON, Calif. (KGTV) - The son of sex offender Matthew Hedge pleaded not guilty Thursday in El Cajon to child molestation charges. Shaun Crocker, 34, molested a 13-year-old girl at least six times, prosecutors allege. Crocker appeared before a judge at the El Cajon courthouse on charges of lewd and lascivious acts on a child under 14. He was ordered to be held on million bail and return to court Aug. 16 for a readiness hearing.Crocker's birth certificate shows he is the son of Matthew Hedge, a sex offender convicted in 1989 of molesting four children. RELATED: Son of sex offender suspected of child molestation in San Diego CountyHedge was treated at Atascadero State Hospital. His housing situation was met with controversy from concerned parents. Authorities placed him in a trailer on the grounds of Donovan State Prison in Otay Mesa; he later moved to a downtown residential hotel. 906