People who receive one of the Covid-19 vaccines may become the next super-spreaders because they could believe they are safe from transmitting the virus.
Harvard University public health student Rushabh Doshi made the warning on KevinMD - a platform founded by Dr Kevin Pho for medical professionals to share their insight.
While the various vaccines against Covid-19 and its variants do prevent most from developing serious symptoms and dying, the main products may not prevent the virus continuing to spread. The Covid-19 vaccinations prevent disease, but we know little about if it prevents reinfection and further viral transmission, Mr Doshi wrote.
Queensland has been put on high alert after coronavirus was found in sewage at a string of wastewater treatment plants, including three in Brisbane.
Viral fragments of the virus were detected at facilities in the state capital, as well as those servicing Hervey Bay - such as one in Maryborough.
In total, seven plants showed evidence of the virus - Caboolture South, Oxley Creek, Bundamba, Gibson Island, Luggage Point, Maryborough and Pulgul.
While it is not unexpected for the virus to be detected in Brisbane s waters, due to infections in hotel quarantine, the other plants are a cause for concern.