WASHINGTON (Reuters) - The presidential election campaign of Donald Trump says its official website was defaced earlier on Tuesday and that it is working with law enforcement to investigate the source of the attack.

Oct 28 (Reuters) - UK Vaccine Taskforce Chair Kate Bingham said on Tuesday that the first generation of COVID-19 vaccines "is likely to be imperfect" and that they "might not work for everyone."

(Reuters) - The first day of Facebook Inc's effort to stop new political advertising being introduced in the final stretch of U.S. election campaigning was marked by complaints that the planned moratorium was beset by glitches.

NEW YORK (Reuters) - Automobile insurance startup Root Inc sold shares in its initial public offering (IPO) on Tuesday at $27 apiece, above its target range, to raise $663.7 million, according to two people familiar with the matter.

(Reuters) - Australia's Afterpay Ltd said on Wednesday underlying sales in the first-quarter more than doubled, helped by strong growth in the United States where the buy-now-pay-later firm added nearly 1 million new customers over three months.

WASHINGTON (Reuters) - The Texas Supreme Court on Tuesday ruled that the state's Republican governor may limit drop-off sites for election ballots, in a political win for U.S. President Donald Trump days before the Nov. 3 election.

(Reuters) - A Michigan judge sided with gun-rights advocates on Tuesday in allowing the open carrying of firearms at Election Day polling sites, blocking enforcement of an order by state authorities barring such displays of weapons to prevent voter intimidation.

* Graphic: World FX rates in 2020 https://tmsnrt.rs/2RBWI5E

CHICAGO, Oct 27 (Reuters) - Nearly half a million people have contracted COVID-19 in the United States over the last seven days, according to a Reuters tally, as new cases and hospitalizations set records in the Midwest.