Pakistan, Oct. 23 -- Lahore faces a severe health crisis as influenza vaccine became virtually unavailable across retail pharmacies, following an earlier acute shortage of insulin. Local medical store operators reported that major international pharmaceutical brands failed to supply seasonal flu vaccines to the Pakistani market this year. Consequently, elderly citizens and vulnerable patients suffering from chronic illnesses face significant difficulties obtaining essential preventative immunizations. Medical experts strongly advise senior citizens to receive flu vaccinations annually during September to boost immunity before winter sets in. However, the widespread shortage leaves thousands of vulnerable individuals unprotected against se...