从能力，到实施，完全不是一码事。
设计，和生产，更是两个完全不同的领域。
有些人，善于捕风捉影，夸夸其谈。更有人，笔下春秋、信口开河……
https://www.rfi.fr/en/brazil-says-russian-covid-vaccine-carried-live-cold-virus
According to a slideshow uploaded online, scientists at Anvisa, Brazil's regulator, said they tested samples of the booster shot and found it was "replication competent" -- meaning that once inside the body, the adenovirus can continue to multiply.
They added that this had likely occurred because of a manufacturing problem called "recombination," in which the modified adenovirus had gained back the genes it needed to replicate while it was being grown inside engineered human cells in a lab.
………、
Rasmussen, a research scientist at Canada's Vaccine and Infectious Disease Organization, described the error as a quality control issue, rather than a problem inherent to the technology.
If batches used in the real world were tainted, then "for most people this probably won't be a big deal because adenoviruses are generally not thought of as really important human pathogens," she said.
………、
Denis Logunov, deputy director of the Gamaleya Institute, has responded by saying "The statements I have read in the press have nothing to do with reality" and that the adenovirus vector was not able to replicate.
