But Imperial has been repeatedly criticised for its pessimistic Covid models, which predicted 250,000 deaths in the first wave without further action. 'That is not necessarily the best way to provide protection against a respiratory virus infection, where we want the immune system to be active in the upper respiratory tract and then in the lower respiratory tract, which is where the virus is causing the infection. Fox News' Alexandria Hein contributed to this report. It's thought that nasal sprays may better target immune cells in the lungs, throat and nose, making them even more effective at defending against Covid. ANTIVIRAL NASAL SPRAY MAY FIGHT CORONAVIRUS, STUDY FINDSDouglas suggested the nasal spray could boost vaccine uptake because some may prefer the method over an injection.
there have been multiple trials conducted by the same people.
( z0 try :quant ( z1 multiple ) :ARG0 ( z2 person :ARG1-of ( z3 same ) ) )
(z0 / try-02
    :quant (z1 / multiple)
    :ARG0 (z2 / person
              :ARG1-of (z3 / same-01)))
there have been multiple trials conducted by the same people .
z0 :quant z1
z2 :ARG1-of z3
z0 :ARG0 z2