The COVID-19 pandemic has left an indelible mark on the world, with the development and distribution of COVID-19 vaccines being a pivotal aspect of public health policy. As of 2026, over 12 billion doses of mRNA-based COVID-19 vaccines have been administered globally, with a significant portion of them being from companies like Pfizer-BioNTech and Moderna. However, recent discussions have sparked concerns over the safety of the mRNA-lipid nanoparticle (LNP) platform used in these vaccines. Immunologist and computational biologist Dr. Jessica Rose, a Brownstone Institute Fellow, has been at the forefront of these discussions, highlighting the potential flaws in the mRNA-LNP platform. Dr. Rose has taken to social media to emphasize that vaccine-related harms stem not only from the spike protein encoded by the modified mRNA but fundamentally from the delivery platform itself—specifically the lipid nanoparticles (LNPs) used in these products. Her comments came in response to a post by Dr. Lynn Fynn-derella about Robert F. Kennedy Jr.'s (RFK Jr.) plans to compile a COVID-19 vaccine injury list. The post by @Fynnderella1 (July 10, 2026) simply stated: "Needs to happen! It’s a start." alongside an image from *The Hill* featuring RFK Jr. with the headline: **"RFK Jr. plans COVID-19 vaccine injury list."**

Dr. Jessica Rose emphasized that the injury issue is not just about the COVID-19 injectable products but about the platform itself. She highlighted the importance of understanding that the injuries stem from both the modified mRNA and the LNP-based immunological disruptions. ### Key Facts About mRNA and LNPs mRNA vaccines, such as Pfizer-BioNTech's Comirnaty (BNT162b2) and Moderna's Spikevax (mRNA-1273), represent a novel technology. Unlike traditional vaccines that introduce inactivated pathogens or protein subunits, these deliver synthetic nucleoside-modified messenger RNA encapsulated in LNPs. 1. **Nucleoside-Modified mRNA**: The use of modified nucleosides (e.g., pseudouridine) to evade innate immune detection and enhance stability/translation is a key feature of mRNA vaccines.

Critics argue that this can lead to uncontrolled protein production, frameshifting, and potential off-target effects. 2. **Lipid Nanoparticles (LNPs)**: LNPs consist of ionizable lipids, PEG-lipids, cholesterol, and helper lipids. They protect mRNA and facilitate cellular uptake but are highly inflammatory. A 2021 study by Ndeupen et al. (iScience) demonstrated that empty LNPs (without mRNA) cause significant inflammation, neutrophil infiltration, and cytokine production (e.g., IL-1β, IL-6) in mice via intradermal, intramuscular, or intranasal routes.

Intranasal delivery led to ~80% mortality in one high-dose scenario. ### Background on mRNA-LNP Platform mRNA vaccines work by introducing a piece of genetic material that instructs cells to produce the SARS-CoV-2 spike protein, triggering an immune response. Despite their success in preventing severe COVID-19 illness, concerns about the long-term effects of mRNA vaccines have been growing.

### Reactions to RFK Jr.'s Plans The announcement of RFK Jr.'s plan to compile a COVID-19 vaccine injury list has sparked a mix of reactions from the public and the medical community. While some have welcomed the initiative, others have expressed concerns about the potential for misinformation and the politicization of the issue.

Dr. Jessica Rose emphasized that addressing the concerns surrounding the mRNA-LNP platform requires a nuanced approach, one that takes into account the complexity of the issue and the need for further research. ### Implications of the mRNA-LNP Platform The implications of the mRNA-LNP platform go beyond the COVID-19 pandemic. If the concerns about the safety of this platform are validated, it could have far-reaching consequences for the development of future vaccines.