Booking Holdings owns brands including Kayak and Booking.com.<br />Business Insider reports it saw the worst effects of the pandemic in the second quarter.<br />It reported gross bookings fell 91%. <br />During an earnings call CEO Glenn Fogel said a vaccine or effective treatment will be necessary for business to return to normal. <br />The company said it's expecting a high level of uncertainty for the next several quarters.<br />It's unclear how comfortable people will be to travel as the pandemic rages forward.
