Albert Bourla, the chief executive officer (CEO) of American pharmaceutical giant Pfizer who is in Davos for the World Economic Forum (WEF), was confronted by two journalists on Wednesday (January 18) over the company's vaccine against Covid.

Watch | In Davos, Pfizer CEO confronted by journalists over 'ineffective' Covid vaccine

The head of US pharma giant, Pfizer, has said that yearly Covid vaccination might be necessary to maintain a “very high level of protection”. Dr Albert Bourla, chief executive at the company which delivered the world's first Covid vaccine a year ago, said the countries may have to rely on jabs for many years to come to counter new variants and waning immunity.

Yearly Covid vaccinations necessary to counter new variants, waning immunity: Pfizer boss

Pfizer is in discussions with the Indian government seeking an "expedited approval pathway" for its COVID-19 vaccine, its CEO Albert Bourla said on LinkedIn on Monday, announcing a donation of medicines worth more than $70 million.

Pfizer donates 'largest humanitarian relief' worth $70 million to India

The CEO of Pfizer Albert Bourla says that there is likely a need for a third dose of booster shot somewhere between 6 and 12 months and then form there will be annual revaccination but all of that needs to be confirmed. Health official says the emergence of the new variant is the primary reason.

Pfizer CEO Albert Bourla raises possibility of 'annual revaccination '

Pfizer Inc's CEO Albert Bourla has said that the company is "not certain" if those who receive its vaccine will be able to transmit the coronavirus to others, just one day after the UK became the first to approve the inoculation.

Pfizer CEO 'not certain' if coronavirus vaccine will prevent transmission

Pfizer CEO Albert Bourla sold $5.6 million of his stock in the US pharmaceutical company on the same day it announced promising results for its Covid-19 vaccine candidate, filings showed Wednesday.

Pfizer CEO sold $5.6 million in stock on the day of vaccine announcement 

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