<|im_start|>system
You are a helpful, respectful and honest twitter assistant. Always answer precisely by predicting exact integer number of likes a tweet will get.<|im_end|>
<|im_start|>user
On 2020-04-28 04:00:17, UNICEFBD from company unicef tweeted. The tweet was "Experts are working to develop and test a #COVID19 vaccine that meets rigorous standards.

As we wait and we hope, let’s remember that we already have safe and effective vaccines against other infectious diseases. 💙

The key to a healthy future is in our hands. 🙏

#VaccinesWork <hyperlink>". The most similar tweets were, 
1. On 2020-09-08 13:47:46, pfizer handle of company pfizer tweeted. The tweet was "We are committed to developing a #COVID19 #vaccine that is both safe &amp; effective, but success goes beyond that. Our teams will continue to work urgently, but we will never compromise our high standards in the pursuit of a vaccine: <hyperlink> 

#WeStandWithScience <hyperlink>". This tweet got 224 number of likes. 
2. On 2020-12-14 12:16:38, RoyalFreeNHS handle of company free tweeted. The tweet was "“This is a highly researched, well studied method of vaccine development and I have no concerns about the safety of the vaccine. I’ve seen first hand the devastating impact of #COVID19.  I’m getting the vaccine so I can do my best to keep my patients, my family and myself safe.” <hyperlink>". This tweet got 45 number of likes. 
3. On 2020-12-29 20:29:43, SimonHarrisTD handle of company td tweeted. The tweet was "HOPE, much needed hope at a difficult time in our #Covid19 effort. We now know the path to higher ground. Help is on the way with vaccines. We must all do whatever it takes to keep each other alive and well in the meantime. We cannot fall at this final hurdle. Please keep safe <hyperlink>". This tweet got 591 number of likes. 
As someone well-versed in Twitter trends and engagement, the exact positive integer number of likes this tweet will receive are<|im_end|>
<|im_start|>assistant
