Thank you for your comment. Indeed, the SARS-CoV-2 behaves differently from traditional respiratory viruses—they are more infectious (as compared to SARS-CoV and MERS). After all, viruses are constantly mutating and evolving to infect more efficiently—since this is their way to survive.

With reference to writer Shin Jie Yong’s article on the mode of Covid-19 transmission through the eyes (link: https://medium.com/microbial-instincts/the-eye-and-coronavirus-an-update-of-what-we-know-15165b4318e0 ), and mine (here) on the transmission of Covid-19 through blood, most of the evidence we have thus far showed that the culturing of the SARS-CoV-2 isolated from the eyes and the blood are rarely successful, indicating that it is unlikely that the viruses be transmitted through the blood and the eyes. Yet, there are also studies that showed success. This might mean that the viruses have yet to find a sure way to survive in the blood or in the eyes.

However, given the chance to reside in the human body long enough as the pandemic stretches on, it wouldn’t be a surprise that one day, survival of the fittest allows the SARS-CoV-2 to survive in the blood or the eyes and be transmitted through them as well.

Thank you for sharing your article, it has given me a view of the pandemic in the perspective of an All-hazards. It truly is important to know the origin and nature of the SARS-CoV-2 and its relatives. After all, the root cause of a problem and every information therein constitute the border of the jigsaw puzzle that we’re still struggling to solve.