The COVID-19 pandemic has exposed and exacerbated existing disparities in various societies. This study investigates disparities among racial, ethnic, and linguistic groups in Hong Kong's society in COVID-19 infection rates and lockdown enforcement practices that was imposed 545 times from January 2021 to September 2022 and affected 9% of the population. It is found that neighborhoods with more white individuals had lower infection rates than the overall population, while those with more ethnically minoritized groups had higher infection rates. Furthermore, hit rate tests reveal that the government targeted more neighborhoods with a higher share of individuals from linguistically minoritized groups. This novel finding suggests that not only race, but linguistic difference of the same ethnicity can cause bias. The study highlights the positive impact of providing ethnic support services on health outcomes in neighborhoods with a higher share of individuals from ethnically minoritized groups.