Table 12.

Hub and Authority scores of health-care sector network before and during COVID-19 period.

	Pre-COVID-19		COVID-19 wave-1		COVID-19 wave-2
Top 5 Hub-Centrality Score
1	MRK	(0.495)	TMO	(0.545)	MDT	(0.455)
2	ABBV	(0.407)	MDT	(0.459)	TMO	(0.399)
3	JNJ	(0.394)	UNH	(0.396)	PFE	(0.334)
4	TMO	(0.361)	MRK	(0.266)	MRK	(0.327)
5	UNH	(0.273)	BMY	(0.262)	UNH	(0.302)
Top 5 Authority-Centrality Score
1	AMGN	(0.465)	ABT	(0.403)	ABT	(0.378)
2	PFE	(0.437)	BMY	(0.392)	BMY	(0.369)
3	BMY	(0.356)	JNJ	(0.367)	JNJ	(0.344)
4	MDT	(0.349)	PFE	(0.343)	MDT	(0.333)
5	MRK	(0.276)	ABBV	(0.325)	PFE	(0.333)