Here are a few options for a formal title, depending on your focus:
Option 1 (Most direct and professional):
“The Impact of Misinformation on Social Health Authority Registration and Public Awareness in Narok County”
Option 2 (Focusing on the challenge):
“Addressing Low Social Health Authority Enrollment in Narok County: The Role of Misinformation and Public Awareness”
Option 3 (Concise and academic):
“Misinformation as a Deterrent to Social Health Authority Engagement: An Analysis of Narok County”
Recommendation: Option 1 is the most suitable for a formal report or article heading as it clearly states the cause (misinformation) and the effect (low registration/awareness).