Network visualization map illustrating international research collaboration among countries on One Health-COVID-19, featuring a minimum research output of 10 documents per country and a minimum of 100 citations per country. Full counting is employed, where each co-authorship link is assigned equal weight. Twenty-four countries out of 110 countries met the threshold. For each of 24 countries, the total strength of the co-authorship links with other countries was calculated. The more important an item, the larger its label and its circle. The countries with the greatest total link strength were selected. The map categorizes countries into 3 clusters, each represented by distinct colors based on their frequent collaborations. Cluster 1, highlighted in red, consists of 10 countries with the United States at its core. Cluster 2, marked in green, includes 7 countries with the United Kingdom as its core. The final cluster, distinguished by a blue color, encompasses 7 countries with India at its core. The map was created using VOSviewer software version 1.6.19.