Is there a vaccine that works for covid-19 in humans yet?

Yes: The first vaccine for COVID-19 illness caused by the coronavirus (SARS-Cov-2) was approved by the US FDA on Dec 11 2021. The Pfizer/BioNTech vaccine is 95% effective, and has no significant serious side effects (fever and muscle soreness were common side effects). Complete protection requires two shots, 3 or 4 weeks apart. A second vaccine from Moderna also is effective and will likely be approved

COVID-19 vaccine is available, safe, and found to be effective for children 6 months and older and adults. In the US, it is emergency use authorized for 6 months and up and fully authorized for 16 years of age and up (Pfizer);18 and up for Moderna. I encourage everyone who is eligible to be vaccinated and boosted! (July 2022)