This is based on experience and anecdotal
I and my office mate were fully vaccinated But we got infected Both of us went on quarantine. But she struggled because she had to be on oxygen
I learned from a friend that an acquaintance who had been vaccinated succumbed to the virus. Another friend was infected twice.
Conclusion:
1. Do not be complacent that you are 100% safe after getting your jab You can get sick again or even pass away
2. I overheard an interview: "You will be safe from the serious side effect of the virus. Yes. But will you cure yourself of the disease. Answer - No.
3. In the local and international travel is having a vaz card enough guarantee that you will not spread the disease
How's that?