Source: USCIS
To anyone worried about recent stringent changes to the public charge rule, please be assured that corona virus COVID-19 testing and treatment will NOT count as a negative factor in making a public charge determination. You are encouraged to seek out treatment and testing if you exhibit symptoms of the virus or are otherwise concerned.
“To address the possibility that some aliens impacted by COVID-19 may be hesitant to seek necessary medical treatment or preventive services, USCIS will neither consider testing, treatment, nor preventative care (including vaccines, if a vaccine becomes available) related to COVID-19 as part of a public charge inadmissibility determination, nor as related to the public benefit condition applicable to certain nonimmigrants seeking an extension of stay or change of status, even if such treatment is provided or paid for by one or more public benefits, as defined in the rule (e.g. federally funded Medicaid).”