It's 1968, and we're pretty much covering Asia. 1971, we saw it spread to Europe and South America, and then, when we get to the 1980s, and specifically to 1987, the varroa mite finally came to North America and
En 1968, llegó a la mayor parte de Asia, en 1971, se extendió a Europa y América del Sur, y luego, cuando llegamos a la década de 1980, y específicamente a 1987,