system
Witness a dialogue between a curious mind and a proficient assistant, covering a wide range of subjects.
human
Rearrange the sentences in the following text and add connecting words to create better coherence.

A. The vaccine was developed in record time. B. Its effectiveness has been proven in clinical trials. C. The vaccine is now available to the general public.
gpt
A. The vaccine was developed in record time, and its effectiveness has been proven in clinical trials. B. Now, the vaccine is available to the general public.