every new variant has claimed to be more transmissible or deadlier than previous by some huge percentage which later gets revised, good to be cautious but it does seem there's a tendency to overexaggerate any new outbreak
You can minimize this all you like but the facts do indeed show that these new variants are more contagious.
Stuart Ray, M.D., vice chair of medicine for data integrity and analytics, and
Robert Bollinger, M.D., M.P.H., Raj and Kamla Gupta professor of infectious diseases, are experts in SARS-CoV-2, the virus that causes COVID-19. They talk about what is known about these new variants, and answer questions and concerns you may have.
“Researchers have preliminary evidence that some of the new variants, including B.1.1.7, seem to bind more tightly to our cells”. “This appears to make some of these new strains ‘stickier’ due to changes in the spike protein."
"“There are 17 genetic changes in the B.1.1.7 variant from England,” There’s some preliminary evidence that this variant is more contagious. Scientists noticed a surge of cases in areas where the new strain appeared.”
"Some of these mutations enable the coronavirus to spread faster from person to person, and more infections can result in more people getting very sick or dying. In addition, there is preliminary evidence from Britain that some variants could be associated with more severe disease."
The new variant from Vietnam is a hybrid and appears to be very contagious and especially deadly in a laboratory settings but as the reports have indicated it remains to be seen how it affects the general population. Doesn't look good so far.
Vietnam has done a remarkable job up until recently in suppressing the COVID virus among their population with only about 7100 cases total so far. Unfortunately, a huge percentage of those cases have happened only recently and this sudden spike appears to confirm a much more contagious variant in their midst. This was the reason their health agency has been scrambling to get a handle on what is going and the discovery of this new variant was the result of those investigations.