It will be 10 years next March since Muamba's career was ended after he suffered a cardiac arrest on the pitch while playing for Bolton at Tottenham but the 33-year-old said instances of said that it proved how much more there was to be done.
Muamba said: 'There's a complacency about it. We have a high profile incident, talk a lot about it and think we have solved it but that's not the case.
Fabrice Muamba collapsed during Bolton's game against Spurs at White Hart Lane in 2012
Denmark midfielder Christian Eriksen suffered a cardiac arrest against Finland at Euro 2020
'There's been Iker Casilas in Porto, the current conversation about Sergio Aguero, who has had heart problems. Daley Blind at Ajax is another. And Christian Eriksen, of course.
'We are supposed to be the fittest of the fittest but it's happening more frequently now. If it can happen to them it can happen to anybody else.'
Aguero was taken to hospital for a cardiac examination after suffering chest pain and dizziness during his side's 1-1 draw with Alaves last month.
The 33-year-old was treated on the pitch after he was seen holding his chest just moments before half-time and was