Update content/24.vaccines-novel.md

Co-authored-by: Anthony Gitter <[email protected]>

content/24.vaccines-novel.md

@@ -9,7 +9,7 @@ The ongoing SARS-CoV-2 pandemic has made the importance of such efforts especial
 New biotechnological advances in vaccinology allow for recent advances that provide only the nucleic acid building blocks of an antigen, eliminating many safety concerns.
 During the COVID-19 pandemic, these DNA and RNA vaccines have facilitated the development and deployment of vaccines at an unprecedented pace.
 This success was attributable at least in part to broader shifts in scientific research relative to prior epidemics; the genome of SARS-CoV-2 was available as early as January 2020, facilitating global efforts in the development of DNA and RNA vaccines within two weeks of the international community becoming aware of the new viral threat.
-Additionally, these technologies that were previously only theoretical are not only safe but also to have highly efficacious.
+Additionally, these technologies that were previously only theoretical are not only safe but also highly efficacious.
 
 Although historically a slow process, the rapid development of vaccines during the COVID-19 crisis reveals a major shift in vaccine technologies.
 Here, we provide historical context for the emergence of these paradigm-shifting vaccines.