Translation of "strain" into Serbian

Imagine the mental strain it must be trying to use the right fork all the time.

Samo zamisli koliki mentalni napor ima uvek kada treba da izabere pravu viljušku.

Now we know that there's a strain of syphilis that you ordered was found on his spine.

Sad znamo kako imamo novi soj sifilisa koji ste naručili nađen na njegovoj kičmi.

Help me hunt down every strain of virus within this company and destroy them.

Pomozi mi da nađem svaku crtu virusa u ovoj kompaniji i da ih uništim.