When going to get vaccinated, you're often asked which arm you'd prefer to be jabbed. 

Most people pick their least dominant arm so the pain from the injection site bothers them less. 

A new finding from a study on the immune system suggests that might give you a faster, and better, immune response. 

Guest/s

• Professor Tri Phan, the Garvan Institute of Medical Research

References

• Macrophages direct location-dependent recall of B cell memory to vaccination