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Of the $ 50 billion that was made available for testing, there's still about 10 billion that we have. Are we going to have more than $ 10 billion worth of needs and costs on Covid, especially in regards to testing ? There's a strong chance we will, depending on, again, where Omicron takes us. And so that gives you some sense about where those monies are, i don't know whether we'll need more money or not.