"Every few years an alarming disease launches a furious, out-of-the-blue attack on people, triggering a high-level emergency response. SARS. The H1N1 flu pandemic. West Nile and Zika. The nightmarish West African Ebola epidemic.
In nearly each case, major vaccine producers have risen to the challenge, setting aside their day-to-day profit-making activities to try to meet a pressing societal need. With each successive crisis, they have done so despite mounting concerns that the threat will dissipate and with it the demand for the vaccine they are racing to develop.
Now, manufacturers are expressing concern about their ability to afford these costly disruptions to their profit-seeking operations. As a result, when the bat-signal next flares against the night sky, there may not be anyone to respond."