In 2015, China became a major disappointment in its poor publication of data for the avian influenza A(H7N9) virus's 3rd outbreak - choosing to release bulk updates and little to no detail on who, where or when.
The continuing avian influenza A(H5N1) virus outbreak in Egypt is also a mystery to all but a very few. Something that is a concern I think, for a much larger number.
Data from the Ebola virus hotzone countries in western Africa has also had many ups and downs. This is not at all surprising given the conditions, the extent of mobile communications, the history of the region, the political and social issues, the poor health infrastructure and the speed with which Ebola virus disease (EVD) spread through Guinea, Liberia and Sierra Leone in 2014. Many different patterns have emerged over the past year among these numbers.
One pattern is the "heartbeat" of EVD cases - the difference in number between update and summary tallies - seen when plotting the data reported by the World Health Organization.
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It is perhaps the slowest and most painstaking of the phases of this epidemic, but the process still moves forward towards the goal of zero cases and the complete eradication of these particular variants of Zaire ebolavirus, from the planet.