Table 2 Summary of results.

From: Projecting the impact of Covid-19 variants and vaccination strategies in disease transmission using a multilayer network model in Costa Rica

Description

Current variants

Delta variant

Increase with the introduction of Delta

Vaccine strategy 1

13,000 doses per day

(95% CI)

Vaccine strategy 2

30,000 doses per day

(95% CI)

Increase when vaccination rate is reduced

Vaccine strategy 1

13,000 doses per day

(95% CI)

Vaccine strategy 2

30,000 doses per day

(95% CI)

Increase when vaccination rate is reduced

Vaccine Strategy 1

Vaccine Strategy 2

Total positive cases by Dec 31, 2021

572,955

(541337, 601308)

539,484

(511916, 569817)

6.20%

615,574

(589813, 640475)

576,657

(550154, 599234)

6.75%

7.43%

6.89%

New hospitalizations from Aug 2 to Dec 31, 2021

11,306

(11318, 14189)

8,982

(6815, 11393)

25.87%

15,071

(11756, 18532)

12,287

(9586, 15092)

22.66%

33.30%

36.79%

New ICU admissions from Aug 2 to Dec 31, 2021

3,781

(2542, 5092)

2,947

(1925, 4139)

28.30%

4,994

(3 495, 6 593)

3,961

(2691, 5336)

26.08%

32.08%

34.41%

Total Deaths by Dec 31, 2021

7,095

(6 604,7 566)

6,572

(6273, 6936)

7.9%

7,762

(7299, 8162)

7,183

(6847, 7567)

8.06%

9.4%

9.3%

Average hospital charge in ward (10 days average stay)

128,549,220 USD

102,125,340 USD

26,423,880 USD

171,357,270 USD

139,703,190 USD

31,654,080 USD

42,808,050 USD

37,577,850 USD

Average hospital charge in ICU (8-days average stay)

43,859,600 USD

34,185,200 USD

9,674,400 USD

57,930,400 USD

45,947,600 USD

11,982,800 USD

14,070,800 USD

11,762,400 USD

Percentage of target people with at least one dose

73.33%

(73.21, 73.45)

84.50%

(84.35, 84.65)

 

72.89%

(72.74, 73.02)

84.50%

(84.37, 84.66)

   

Percentage of target people fully vaccinated

66.71%

(65.92, 67.53)

76.78%

(75.69, 77.80)

 

65.67%

(64.8, 66.57)

75.04%

(74.02, 76.26)

   
  1. The values and percentages correspond to the results of two vaccine strategies with and without introducing the Delta variant in Costa Rica, a country with five million inhabitants. Hospital expenses are calculated based on a stay of 10 days in the medical ward and eight days in the ICU with an average cost per day of 707,540 colones (about 1,137 USD) in the medical ward and 902,641 colones (about 1,450 USD) in the ICU.