Pence and his wife, Karen Pence, both tested negative for the virus and remain in good health.
US president works to close the gap with Biden and pull off a 2016-style upset win on November 3
The hornets usually don’t attack people but they are known for decimating honeybee colonies
Both companies have contracts to provide vaccine to the US and other governments if they are cleared by regulators.
Many hospitals are not built for a pandemic and are having to buy more beds.
The news boosts hopes that a working vaccine may be available by the end of the year.
Democrat lays out his pandemic response plan just 11 days before US presidential election.
Asked about potential F-35 sales to the UAE, Trump said the "process is moving along".