A report from news-medical.net states that SARS-CoV-2, the virus responsible for COVID-19, employs two separate fusion mechanisms to gain entry into host cells. The finding was published by the outlet on Thursday, 17 September 2026.
According to news-medical.net, the process is described as the virus using two "fusion keys" rather than a single route. Fusion is the step in which the viral envelope merges with a host cell membrane, allowing the virus's genetic material to enter and begin replication. The report frames the discovery around the idea that more than one pathway is involved in that step.
The outlet did not provide further detail in the material available, including the specific proteins, cell types or experimental methods behind the finding.
The claim matters because understanding how a virus enters cells is central to explaining how it spreads and to identifying targets for antiviral drugs. If SARS-CoV-2 can complete fusion through two different routes, that could be relevant to how researchers think about blocking infection at the cellular level. However, news-medical.net's report as summarized here does not state what the two mechanisms are, whether they operate in different tissues, or how the finding was reached.
Because only the headline and summary were available, this article cannot confirm the study's authors, the journal it appeared in, or the laboratory conditions under which the work was done.
What to watch next: the full study and any independent replication, which would clarify what the two fusion routes are and whether they change how researchers approach treatments that aim to stop the virus from entering cells.