If people are getting the COVID vaccine than why the hell are some regions considering another damn lockdown for?

Because only 18% of the population has been fully vaccinated  and cases are rising

Because most of the people have not been vaccinated. And everyday their is new variant coming up with different symptoms. Also people have absolutely stopped 

For more one can deal with maintaining a proper distance between two people (social distance), wearing masks outside, using sanitizer or hand soaps to clean the hands, washing clothes regularly that one must follow.

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Because the covid variant is spreading like wildfire.

The politicians fear they are losing control of the people. 

You need herd immunity which means most of the population needs to be vaccinated. It is how it works here in the UK. We have 60 million vaccinated and are still not out of full lockdown.

Maybe they have to wait for the vaccine before they can take.

Because rates of infection are going up faster than we can vaccinate. It takes at least 60-70% to reach some herd immunity. So far, on 25% of people in the US have gotten 1 shot, and only 15% have gotten both.