Impact of SARS-CoV-2 ORF6 and its variant polymorphisms on host responses and viral pathogenesis

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) encodes several proteins that inhibit host interferon responses. Among these, ORF6 antagonizes interferon signaling by disrupting nucleocytoplasmic trafficking through interactions with the nuclear pore complex components Nup98-Rae1. However, the roles and contributions of ORF6 during physiological infection remain unexplored. We assessed the role of ORF6 during infection using recombinant viruses carrying a deletion or loss-of-function (LoF) mutation in ORF6. ORF6 plays key roles in interferon antagonism and viral pathogenesis by interfering with nuclear import and specifically the translocation of IRF and STAT transcription factors. Additionally, ORF6 inhibits cellular mRNA export, resulting in the remodeling of the host cell proteome, and regulates viral protein expression. Interestingly, the ORF6:D61L mutation that emerged in the Omicron BA.2 and BA.4 variants exhibits reduced interactions with Nup98-Rae1 and consequently impairs immune evasion. Our findings highlight the role of ORF6 in antagonizing innate immunity and emphasize the importance of studying the immune evasion strategies of SARS-CoV-2.

Assessment of internet usage for health-related information among clients utilizing primary health care services

Objective

This study aimed to identify the frequency and goals of Internet usage to access health-related information among primary health care service clients.

Methods

The study was conducted in a primary health care centre with a sample of 788 adults. The data were collected through a questionnaire developed by the researchers.

Results

The results showed that 81% (n = 640) of the participants used the Internet. All Internet user participants reported that they used the Internet to access health-related information. Of the participants, 67% reported that they used the Internet primarily to obtain information about diseases with 94% reporting that they found the online information reliable and 92% reported that they did not confirm the information they obtained online. The frequency of Internet use to obtain health-related information increased with increase in the level of education of participants. Participants with higher education found the online information to be more reliable and comprehensible. The results showed that while the use of Internet to obtain health-related information was high, the information presented online was not always checked for accuracy.

Conclusion

Hence, provision of current and evidence-based information on health-related websites is crucial to preserve community health care.