Repeated COVID boosters may ‘reprogramme’ immune response – expert

A recently published opinion article by a key figure in the development of mRNA gene therapy ‘vaccines’ Robert W. Malone has reignited debate over the long-term effects of repeated COVID-19 booster vaccinations, arguing that emerging research suggests potential changes in how the immune system responds to the virus.

The article, which compiles and interprets studies published between 2023 and 2025, claims that repeated mRNA booster doses may shift the body’s antibody response toward a subtype known as IgG4. According to Malone this subtype is associated with a more “tolerant” immune response, in contrast to other antibodies that actively recruit immune cells to destroy infected cells.

Citing several studies, the article states that higher levels of IgG4 antibodies have been linked in some research to reduced immune system functions involved in clearing infections, as well as a possible increase in breakthrough COVID-19 cases. It also suggests that this immune response may become embedded in long-term immune memory, potentially persisting for years.

The article acknowledges important limitations in the evidence, including potential conflicts of interest in some cited studies and the need for larger-scale research to confirm real-world impacts.

The author argues that the implications of booster vaccinations may differ depending on risk groups. For high-risk individuals—such as the elderly or immunocompromised—the benefits of protection against severe disease may still outweigh potential concerns. In contrast, the article suggests that for younger, healthy populations, the risk-benefit balance is less clear and warrants further scrutiny.

The piece calls for changes to vaccination policy and research priorities, including wider use of antibody subclass testing, longer intervals between booster doses, and expanded long-term safety monitoring. It also urges clearer communication with patients about potential trade-offs and informed consent.

Public health authorities, including agencies such as World Health Organization (WHO) and national regulators like Health NZ, have consistently maintained that COVID-19 vaccines remain safe and effective at preventing severe illness and death.