Waccinate (variant spelling of “vaccinate”)

“Waccinate” is a variant spelling of “vaccinate,” sometimes for jocular effect and sometimes to get around computer algorithms. The spelling became popular in 2020 with the COVID-19 (coronavirus) pandemic, but was used earlier.
 
“Waccine” (wack + vaccine), “waccination,” “waxxine,” “waxinate” or “waxxinate” or “waxxxinate,” and “waxination” or “waxxination” are similar terms.
 
 
Wikipedia: COVID-19 pandemic
The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), first identified in December 2019 in Wuhan, China. The outbreak was declared a Public Health Emergency of International Concern in January 2020 and a pandemic in March 2020.