Develop a daily check in routine. If you temporarily become too ill to hold meetings, count on your most capable members that you have called upon to step up. They can lead the meetings and communicate directly from you. If you are capable, a daily status with you lead team member, even if by email, is essential. Remember that they will be concerned about you as much as you are concerned about their health and well-being.
Whether it is the entire team or at the individual level, all team members need to be touched at least once a day. The check in conversations need not be simply about work and tasks. Find out how your team members are doing. In turn, find out how the next level team members are coping. Encourage openness.