diff --git a/data/parameters.yaml b/data/parameters.yaml
index bea6872..faad2af 100644
--- a/data/parameters.yaml
+++ b/data/parameters.yaml
@@ -5,8 +5,8 @@
 
 model_parameters:
   # Transmission dynamics
-  beta: 0.05              # Transmission rate per contact per day
-  sigma: 0.0002           # Progression rate from latent to active TB (1/day)
+  beta: 0.125              # Transmission rate per contact per day
+  sigma: 0.0001           # Progression rate from latent to active TB (1/day)
   gamma: 0.005            # Natural recovery rate from active TB (1/day)
   mu: 0.00004             # Natural death rate (1/day)
 
diff --git a/data/parameters3.yaml b/data/parameters3.yaml
new file mode 100644
index 0000000..bc8da00
--- /dev/null
+++ b/data/parameters3.yaml
@@ -0,0 +1,18 @@
+
+model_parameters:
+  # Transmission dynamics
+  beta: 0.35              # Transmission rate per contact per day
+  sigma: 0.0002           # Progression rate from latent to active TB (1/day)
+  gamma: 0.005            # Natural recovery rate from active TB (1/day)
+  mu: 0.00004             # Natural death rate (1/day)
+
+  # Intervention parameters
+  treatment_rate: 0.01    # Treatment initiation rate (1/day)
+  vaccine_efficacy: 0.7   # Vaccine effectiveness (proportion)
+
+  # Contact and mixing parameters
+  contact_rate: 10        # Average contacts per person per day
+
+  # Disease progression probabilities
+  prob_fast_progression: 0.05  # Probability of fast progression to active TB
+  prob_reactivation: 0.001     # Annual reactivation rate for latent TB
diff --git a/results/tb_model_output.png b/results/tb_model_output.png
index 428ad24..05120a6 100644
Binary files a/results/tb_model_output.png and b/results/tb_model_output.png differ
diff --git a/src/tb_model.py b/src/tb_model.py
index 86d16e2..56071f4 100644
--- a/src/tb_model.py
+++ b/src/tb_model.py
@@ -249,8 +249,10 @@ def run_simulation(self, years=10):
         print(f"Simulation completed for {years} years")
         return results
 
-    def plot_results(self, save_path='../results/tb_model_output.png'):
-        """Create visualization of model results."""
+    def plot_results(self, save_path='./results/tb_model_output.png'):
+        """Create visualization of model results.
+        save.path"""
+
         if self.results is None:
             print("No results to plot. Run simulation first.")
             return