Covid-19 vaccines can be easily adapted to target new strains of the virus

[Ju]

"Pfizer and Moderna’s current Covid-19 vaccines can be easily adapted to target new strains of the virus, something the drugmakers are already working on."

I don't understand the sentence "can be easily adapted to target new strains of the virus."

 

[teechar]

I don't understand the [STRIKE]sentence[/STRIKE] part "can be easily adapted to target new strains of the virus."

The vaccine can be modified in future to make it effective against new COVID mutations which may appear.