How effective is this year's flu vaccine?

CDC conducts studies each year to determine how well the flu vaccine protects against flu illness. While vaccine effectiveness can vary, recent studies show vaccine reduces the risk of flu illness by about 50%  to 60% among the overall population during seasons when most circulating flu viruses are like the vaccine viruses.

How do we if it is a video and they know your face.

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.