Je was op zoek naar: spreaders (Engels - Swahili)

by the spreaders spreading.
naapa kwa pepo zinazo tawanya,

and we have spread out the earth, so how excellent spreaders we have been!
na ardhi tumeitandaza; basi watandazaji wazuri namna gani sisi!

apart from the super-spreaders, it was estimated that each case could give rise to approximately two secondary cases, with an incubation period of 4 to 7 days and the peak of viral load appearing on the 10th day of illness.
kando na vienezi vikuu, ilikadiriwa kwamba kila kisa kingeibua takriban visa viwili vya pili na kipindi kati ya kuambukizwa na kujitokeza cha siku 4 hadi 7 na upeo wa kiwango cha virusi ukionekana siku ya 10 ya ugonjwa.

the meaning of the word spreader
maana ya neno kiambaza