Tulio de Oliveira
... that after first alerting authorities to the Omicron variant in South Africa, bioinformatician Tulio de Oliveira insisted that its origin is unknown?
... that after first alerting authorities to the <a href="./SARS-CoV-2_Omicron_variant" id="mwBMM" rel="mw:WikiLink" title="SARS-CoV-2 Omicron variant">Omicron variant</a> in South Africa, bioinformatician <b id="mwBMQ"><a href="./Tulio_de_Oliveira" id="mwBMU" rel="mw:WikiLink" title="Tulio de Oliveira">Tulio de Oliveira</a></b> insisted that its origin is unknown?