Covid-19 Sample found in Barcelona waste water likely a mix-up
29 June 2020
Experts including Professor Francois Balloux (香港六合彩中特网 Genetics, Evolution & Environment) cast doubt on a university team鈥檚 claims to have found samples of Covid-19 in water, stating "The most plausible explanation is sample mix-up/contamination.鈥�
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