Something That Could Cause Vaccines Against Covid-19 Not to 'Stick'?

The bodies of US citizens (and folks from some other countries) commonly contain measureable quantities of manmade per- and polyfluoroalkyls (PFAS). These chemicals are used in non-stick pans, waterproof clothing and even pizza boxes. PFAS have been tentatively linked to a number of medical conditions such as increased liver damage, decreased fertility and even some forms of cancer. The Harvard School of Public Health have pointed out that these chemicals also reduce the effectiveness of certain vaccines (https://www.theguardian.com/world/2020/nov/17/chemicals-found-in-everyday-products-could-hinder-covid-19-vaccine). Many of the vaccines, being developed to counter the Sars-CoV-2 pandemic, are being successfully tested on US patients. The possibility remains, however, that high concentrations of PFAS might reduce their effectiveness in particular patients. It could become another underlaying 'risk factor'.