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SAN DIEGO (CNS) - Despite an adjusted daily COVID-19 case rate of 7 per 100,000 population, San Diego County was again able to avoid being pushed into the most restrictive purple tier of California's four-tier reopening system.High rates of testing helped the county stay in the red tier, county officials said. The positive adjustment is given by the state to counties that are testing at higher levels than the state's median. That adjustment prevented the county from landing in the purple tier, which would have placed indoor activities at restaurants, movie theaters, gyms and a number of other locations in jeopardy."Remaining in the red tier is good news, but the new adjusted rate is not. The new figure clearly shows the region is not moving in the right direction," said Dr. Wilma Wooten, San Diego County public health officer. "It is extremely important San Diegans follow the local health guidance to slow the spread of COVID-19 and keep the region from falling into the purple tier."The county's unadjusted case rate for the week of Oct. 4-10 rose from 7.2 to 7.8 cases per 100,000 residents. It was adjusted down to 7 per 100,000. The data are reported on a one-week delay.While the testing positivity percentage for the region also increased from 3% to 3.3%, it still remains low enough for this metric to remain in the orange tier. If a county reports statistics meeting metrics in a higher tier for two consecutive weeks, it will move into that more restrictive tier for a minimum of three weeks.The state's health equity metric, which looks at the testing positivity for areas with the lowest healthy conditions, dropped from 5.7 to 5.5% and remained in the red tier. This metric does not move counties backward to more restrictive tiers, but is required to advance.County public health officials reported 265 new COVID-19 infections and four deaths related to the illness Tuesday, raising the region's total case count to 53,000 and the death toll to 857.Four men died between Oct. 11 and Oct. 18, and their ages ranged from mid-50s to early 80s. All had underlying medical conditions.Of the 9,110 tests reported Tuesday, 3% returned positive, bringing the 14-day rolling average percentage of positive cases to 2.8%, far below the state-set target of less than 8%.Of the total COVID-19 cases in the county, 3,788 or 7.1% have been hospitalized, with 876 -- or 1.7% -- spending at least some time in an intensive care unit.Five new community outbreaks were reported Tuesday, two in businesses, one in a restaurant/bar setting, one in a K-12 school setting and one in a faith-based institution. In the past seven days, 30 community outbreaks were confirmed, well above the trigger of seven or more in a week's time.A community outbreak is defined as three or more COVID-19 cases in a setting and in people of different households over the past 14 days.The county uses community outbreaks to get a larger sense of the pandemic locally, but the state does not include the statistic in its weekly report.Wooten said 95% of the county's cases were not related to a marked community outbreak, a clear indicator the illness has spread throughout the county.The Vista Unified School District, meanwhile, fully reopened its schools Tuesday morning, becoming one of the first in the region to do so.The district invited students back to 28 schools, eschewing some of the more cautious measures some other school districts are taking, moving into its Phase 3 reopening plan. The plan, "Vista Classic," allows every school in the district to reopen at full capacity. Parents and guardians will still be able to keep students in "Vista Virtual," the district's distance-learning program, if they so choose."Our health and safety measures were working well, with mask wearing and handwashing particularly strong on all campuses," Vista Superintendent Matt Doyle said after visiting campuses. "We will continue to refine arrival, dismissal, and lunchtime routines for students as they relearn how to interact with their friends in this new social distancing environment."The district said it will attempt to have social distancing as much as possible, but will allow as many as 38 students in a single classroom, so desks will not be spaced six feet apart.A rally Thursday by teachers and parents at Foothill Oaks Elementary School attempted to dissuade the Vista Unified School Board from reopening, with many educators believing the safety measures inadequate.According to KPBS, plexiglass barriers were not provided to teachers. Instead, they were given PVC pipes and plastic liner to create makeshift protection from students returning to in-person learning. 4675

SAN DIEGO (CNS) - Authorities Friday publicly identified a 20-year-old man who was found dead of an apparent homicide in a car parked on a Southcrest- area roadside.Patrol officers responding to a report of a possible traffic accident in the 4000 block of Boston Avenue around 11:50 a.m. Wednesday found Ismail Abouabid mortally wounded behind the wheel of the parked vehicle, bleeding from the head, according to San Diego police.Abouabid, who had recently relocated to San Diego from Erie, Pennsylvania, was pronounced dead at the scene, Lt. Matt Dobbs said. Police initially reported that the man apparently had been shot to death but later backed off from those statements.RELATED: Police investigating after man found dead in car in Southcrest``It is very early in the investigation, and little is known about the events leading to (his) death,'' Dobbs said. ``The mechanism for the man's injury is not being released at this time.''Witnesses told investigators three male teenagers had been with the victim shortly before his death.``The group of teenagers walked away towards a nearby park just before the victim was discovered with the injury,'' the lieutenant said. 1182

SAN DIEGO (CNS) - Authorities Friday publicly identified a 20-year-old man who was found dead of an apparent homicide in a car parked on a Southcrest- area roadside.Patrol officers responding to a report of a possible traffic accident in the 4000 block of Boston Avenue around 11:50 a.m. Wednesday found Ismail Abouabid mortally wounded behind the wheel of the parked vehicle, bleeding from the head, according to San Diego police.Abouabid, who had recently relocated to San Diego from Erie, Pennsylvania, was pronounced dead at the scene, Lt. Matt Dobbs said. Police initially reported that the man apparently had been shot to death but later backed off from those statements.RELATED: Police investigating after man found dead in car in Southcrest``It is very early in the investigation, and little is known about the events leading to (his) death,'' Dobbs said. ``The mechanism for the man's injury is not being released at this time.''Witnesses told investigators three male teenagers had been with the victim shortly before his death.``The group of teenagers walked away towards a nearby park just before the victim was discovered with the injury,'' the lieutenant said. 1182

SAN DIEGO (CNS) - Circulate San Diego released a report today detailing how cities in southern San Diego County can make progress toward eliminating traffic deaths.The report outlined ways in which Imperial Beach, National City, Chula Vista and Coronado can prevent fatal traffic accidents by making improvements to the cities' most dangerous intersections and roadways.Circulate San Diego suggested the cities should take steps to calm traffic flows like restriping roadways to narrow them and reduce speeds. Circulate also recommended that the highlighted cities should asses driving behaviors that lead to serious injury and fatal car accidents and work with local law enforcement officers to target those behaviors through education and traffic law enforcement."Every city has room for improvement to make streets safe and we look forward to working with each South County city to save lives,'' said Maya Rosas, co-author of the study and the organization's director of policy.The report is part of the organization's participation in the Vision Zero campaign, which aims to eliminate fatal traffic accidents altogether. Circulate San Diego and the city of San Diego have already set a goal of eliminating traffic deaths in the city by 2025.The organization made similar recommendations to the city of San Diego last year and the city subsequently repaired its 15 most dangerous intersections. San Diego Mayor Kevin Faulconer announced plans last month to make safety improvements to 300 more of the city's intersections, with the first 50 expected to be finished by the end of 2020. 1595

SAN DIEGO (CNS) - An international team of scientists, led by biologists at the University of California San Diego, has synthetically engineered mosquitoes that halt the transmission of the dengue virus, the university announced Thursday.Scientists at UC San Diego Associate Professor Omar Akbari's lab worked with Vanderbilt University Medical Center to identify a human antibody for dengue suppression. The broad-spectrum antibody stops the transmission of all four known types of the fever, compared to previous experiments, which have been able to limit single strains.The team then designed the antibody "cargo" to be synthetically expressed in the dengue-spreading Aedes aegypti mosquitoes.RELATED: UC San Diego study finds solutions for loneliness"Once the female mosquito takes in blood, the antibody is activated and expressed -- that's the trigger," Akbari said. "The antibody is able to hinder the replication of the virus and prevent its dissemination throughout the mosquito, which then prevents its transmission to humans. It's a powerful approach."Akbari works in the Division of Biological Sciences and is a member of the Tata Institute for Genetics and Society.These lab-engineers mosquitoes could be paired with a dissemination system, making it capable of spreading the antibody throughout wild disease- transmitting mosquitoes, Akbari said.Dengue fever is a virus that poses a severe risk to children and older adults in tropical regions in Asia and Latin America. There are an estimated 390 million infections every year, around 500,000 of which lead to Severe Dengue, and 25,000 people die of the disease every year.RELATED: UCSD Health, San Diego Zoo Safari Park team up to save gorilla's eyesightThe Pan American Health Organization recently reported the highest number of dengue cases ever recorded in the Americas. Infecting those with compromised immune systems, dengue victims suffer flu-like symptoms, including severe fevers and rashes. Serious cases can include life-threatening bleeding. No specific treatment exists and thus, prevention and control depend on measures that stop the spread of the virus.This development could go a long way toward limiting the disease's transmission."It is fascinating that we now can transfer genes from the human immune system to confer immunity to mosquitoes," said coauthor of the paper, Dr. James Crowe, Jr., director of the Vanderbilt Vaccine Center at Vanderbilt University Medical Center in Nashville, Tenn. "This work opens up a whole new field of biotechnology possibilities to interrupt mosquito-borne diseases of man."Akbari's lab is now in the early stages of testing methods to simultaneously neutralize mosquitoes against dengue and a suite of other viruses such as Zika, yellow fever and chikungunya. 2789

来源：资阳报