Table 2. Clinical Outcomes and Covid-19 Severity among Hospitalized Case Patients, According to Vaccination Status.^*.

Variable	Unvaccinated (N=427)	Fully or Partially Vaccinated (N=18)
Severe Covid-19 — no. (%)†	194 (45)	2 (11)
ICU admission — no. (%)	178 (42)	2 (11)
Life-threatening illness with life support — no. (%)‡	126 (30)	1 (6)
Invasive mechanical ventilation — no./total no. (%)	48/425 (11)	1/18 (6)
Noninvasive mechanical ventilation (BiPAP or CPAP) — no./total no. (%)	90/423 (21)	1/18 (6)
Vasoactive infusions — no./total no. (%)	38/426 (9)	1/18 (6)
Extracorporeal membrane oxygenation — no./total no. (%)	13/425 (3)	0
Patients with discharge data — no./total no. (%)	407/427 (95)	18/18 (100)
Median length of hospital stay (IQR)§	5 (2–7)	4 (1–5)
Death before discharge — no./total no. (%)	7/407 (2)	0

^*BiPAP denotes bilevel positive airway pressure, CPAP continuous positive airway pressure, and IQR interquartile range.

^†Severe Covid-19 illness was defined as admission to the intensive care unit (ICU) or life-threatening illness.

^‡Life-threatening Covid-19 was defined as illness leading to invasive or noninvasive mechanical ventilation, the use of vasopressors or extracorporeal membrane oxygenation, or illness resulting in death.

^§Data regarding the length of the hospital stay were not available for 28 unvaccinated patients.