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but scientists flag that without the second dose, there was a noticeable dip in protection. the data really affirming how important it is to get both doses. david? all right, eva pilgrim with us tonight. eva, thank you. we turn next tonight to a new cyber attack. this time, affecting the u.s. meat supply. first it was the cyber attack on the colonial pipeline affecting gas prices in the u.s. well now tonight, the newest attack, targeting one of the largest meat producers in the u.s. the attack, it s believed, again based in russia. and how soon before we see prices affected at the grocery store? here s our chief justice correspondent pierre thomas. reporter: tonight, american consumers facing yet another a cyber attack that could potentially impact everyday life. jbs, the country s largest meat producer, shutting down all meat plans here in the u.s. and others in canada and australia. thousands of workers impacted. jbs calling it a ransomware attack on the company s computer servers with origins in russia.