and that will tell the us whether we need it once a year, once every five years or maybe you're protected for ten years like other vaccines we have. it's an ongoing study, and we'll have more data as time passes. arthel: in the meantime, if you haven't done so, get vaccinated. step up to the plate. all right. dr. janette nesheiwat, thank you very much. eric. eric: yeah. get this behind us. new video has surfaced that could help investigators find this missing 39-year-old california mother. she was last seen abruptly leaving her son's football game two weeks ago, and so far police have only found to her dog. christina coleman in los angeles with more. >> reporter: surveillance video a big part of the investigation into the mysterious dise appearance of heidi plank reported missing on october 20th. now, this new surveillance video that's being mentioned reportedly shows her boss, jason sugarman, dropping off a box of