Delhi reports first case of COVID-19 sub-variant JN.1; total of 109 cases detected in India from Gujarat, Karnataka, Goa, Maharashtra, Kerala, Rajasthan, Tamil Nadu, Telangana; 3 new fatalities reported; JN.1 variant spreading faster in the US; accounts for 50% of cases; symptoms include fever, cough, shortness of breath, fatigue, body aches, loss of taste or smell, sore throat, difficulty breathing, nausea, vomiting, diarrhea; seek medical advice and testing if experiencing symptoms or suspecting exposure.