Why the Helloworld (ASX:HLO) share price is sinking lower today

The Helloworld Travel Ltd (ASX: HLO) share price has come under pressure on the day of its annual general meeting.

In early afternoon trade, the travel booking company’s shares are down over 3.5% to $2.95.

Why is the Helloworld share price dropping lower?

Today’s decline appears to have less to do with its annual general meeting and more to do with a piece of COVID-19 vaccine news.

Fellow travel bookers Flight Centre Travel Group Ltd (ASX: FLT) and Webjet Limited (ASX: WEB) have also come under pressure today after concerns were raised with the data from the AstraZeneca COVID-19 vaccine candidate.

Last week, that data showed that when trial participants were given a half dose, followed by a full dose at least one month apart,…