EVIDENCE is growing that Covid-19 vaccines may worsen the disease in some recipients. The danger arises when a vaccinated person meets the actual virus. Antibodies developed as a result of the jab can end up enhancing disease rather than protecting against infection.
Previous warnings about this potentially lethal effect, known as antibody-dependent enhancement (ADE), have been downplayed or dismissed as theoretical by the manufacturers. The phenomenon has been seen with vaccines against other viruses but is considered very rare.
After reviewing published evidence concerning the effect, however, two US experts  have concluded it is ‘non-theoretical and compelling’. Receiving the vaccine could convert a subject from someone who experiences mild disease ‘to someone who experiences severe disease, lasting morbidity or even death’.