Fig. 1

Graphical illustration of network measures. A network of 7 patients denoted by round nodes and the epidemiological relations between them denoted as directed lines with arrows Patient P150 has an out-degree of 4 and have acted as a source of infection to 4 patients P226, P223, P448, P225. Similarly, patient P225 has an out-degree of 2 and had acted as a source patient for P282 and P284. Patient P225 has an in-degree of one and had acted as a target patient who received the infection from P150. Patient P225 depicted as the green node is the only node in the network which has betweenness centrality of 2 and had bridged the transmission from P150 to two other patient P284 and P282 Other nodes is depicted in purple have zero betweenness. The path length between patient P150 and P225 is one m path length from 150 to P282 and P284 is 2. The maximum path length in the network (i.e. network diameter) is also two which lies between P150 and P284, P282. The number of network component for the depicted network is one as all patient s nodes are connected either directly or indirectly to each other, and no patients node is left unconnected