Are all hospitals in offering flu vaccine? I'm residing in Muntinlupa and planning to have a shot because rainy season is coming.

I believe they do, you can also buy the vaccine itself and have it done in a clinic. Health centers do this too. I have also seen mercury drugstores offer flu vaccine sessions in sime branches. You may also want to ask your company. My previous companies have all offered discounted vaccines to be done in the clinic and it will be salary deduction. My hubby's company does that too and even offers this to other family members too listed as beneficiaries