July 23, 2021 2:42 pm Study Shows Pfizer Effective Against Delta Variant A new study shows strong efficacy from the Pfizer vaccine when it comes to the delta variant. NBC 7’s Melissa Adan shares what the study found. US & World Videos 2:42 Good Samaritan helps rescue family, dogs from San Diego home hit by jet 3:01 All 6 passengers aboard private jet that crashed in Murphy Canyon identified 2:29 U.S. Navy, Port of San Diego monitoring health of San Diego Bay eelgrass 3:11 ICE moves to end court immigration cases, speed up removal of undocumented migrants 0:51 San Diego-based dermatologist charged in alleged $1.3M insurance fraud scheme